Answer:
1. A forest of pine trees is burned over a 10 mile area when lightning strikes a tree. In the spring, a few seedlings are beginning to sprout → secondary succession.
2. A glacier has scraped all soil from a rocky area. As it slowly retreats, some of the rock is broken down by weathering. Some moss begins to grow → primary succession.
3. A small symbiotic organism secretes acid into the rock to anchor itself in place → lichens - pioneer organisms.
Explanation:
The succession is the colonization of an open area and includes all the changes the area suffers since then. It is a sequence of events that involves the establishment of different species through time. A sequence of changes that occur in a community temporally and spatially. Local colonizations and extinctions occur while ecosystems evolve at a more complex level.
Ecological succession occurs in stages. The first stages are represented by communities of simple trophic levels and few species. With time, the communities go through different stages. They transform into more complex ecosystems that are much richer in diversity, showing more interaction among the different species that compose it. The final stage is known as the climax and represents a mature and stable system.
While the community is going through these changes, many species get extinct while many others get to emerge and survive. It occurs overlapping of different taxonomic groups that interact with each other competing or beneficiating other groups.
There are two types of succession, primary and secondary, depending on the magnitude of the alteration.
Primary succession refers to an open space with no living organisms, such as a bare rock exposed due to a retreating glacier, a volcanic activity, or an intense fire. If previous species were inhabiting this area, after the event, nothing is left.In those cases where there is an alteration or disturbance at a site that opens the area, it allows new species to grow. With time, new species arrive and manage to establish again. The order of the establishment depends on the strategies of each of the species to survive.
First, pioneer species arrive. These are the first inhabitants, mostly lichens or plants with the capability of surviving in such an environment. Only a few pioneers can establish in the open space. Pioneers modify the habitat, making it more suitable for the establishment of later species, converting rock into fertile soil. As conditions get better, new species arrive like grasses. Grasses and pioneers keep modifying the soil, making it better with time. New species arrive. Habitat modification keeps on going while new species establish. They produce shadows, alter the temperature, and humidity, fertilizing the soil, competing for resources. Competition becomes more frequent between species. The first species are eventually eliminated by competition, but new species keep appearing and competing for resources. This sequence continues until the commuting reaches a climax, becoming stable and lasting for hundreds of years until another disturbance occurs.
Secondary succession refers to an open space left after a perturbation that might have removed all or some of the vegetable forms of life that used to inhabits that area. But the soil remains good and fertile. It has spores and seeds that will emerge when the conditions are appropriate. The disturbance occurred but vegetable species have strategies to survive the event and grow once it´s over. Pine trees are adapted to fire, and some species need fire to germinate.What does it mean to have a mutation in a cystic fibrosis gene
Answer:In cystic fibrosis, a defect (mutation) in a gene — the cystic fibrosis transmembrane conductance regulator (CFTR) gene — changes a protein that regulates the movement of salt in and out of cells. The result is thick, sticky mucus in the respiratory, digestive and reproductive systems, as well as increased salt in sweat.
Explanation:
3. Based on the data, which beak type was more adapted and which was the least adapted?
4. What would happen if all of the birds flew to a new location and the only food available was beans? Which bird would be most successful? Which bird would be least successful?
5. If you come back to this location (question 4) in 50 years, what would you expect to see? (What type of bird will be the most abundant?)
6. Suppose a drought caused the local extinction of beans, pennies, and paperclips. Using your knowledge of the different beak shapes in your community, and understanding of the steps of natural selection, explain how the change in the environment would affect the populations of bird species.
7. List and briefly explain two other characteristics (other than beak shape) that could help a bird survive if this were a "natural" environment.
1.
2.
8. Using at least three complete sentences, explain how this lab simulation provides support for evolution and the Theory of Natural Selection.
The bigger beaks types of bird species were more adapted able to eat the larger and harder seeds so more of them survived.
What are types of beak among birds?Meat-eater, Fruit-and nut-eater, Seed-eater, and Nectar-feeder beaks are seen among birds differentiated based on the nutrition and food consumed.
What three adaptations do birds have?Beaks (bills), feet, and plumage, in particular, are three physical traits that show distinct environmental adaptations (feathers). The mechanism of evolution that produces living organisms that are adaptable to their circumstances is natural selection.
What technique backs up the hypothesis of evolution?Evolution is supported by fossil data. Numerous fossils' geographic details show that two species with a shared origin can evolve differently in various environments. An organism can be thought of as an early form from which later forms descended.
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A marine biologist and her team capture 40 sea turtles
Question: A marine biologist and her team capture 40 sea turtles and mark them before releasing them. The following year, they capture 60 sea turtles at the same location. Of the 60 sea turtles, only 15 have the mark from the prior year. What is the estimated population of sea turtles for that location? 7 sea turtles 23 sea turtles 160 sea turtles 240 sea turtles
Answer: C) 160 sea turtles
All living cell's are composed of?
Answer:
All cells are made from the same major classes of organic molecules: nucleic acids, proteins, carbohydrates, and lipids.
Explanation:
All cells are made from the same major classes of organic molecules: nucleic acids, proteins, carbohydrates, and lipids.
Why are gametes the only haploid cells in your body?
Gametes are the only haploid cells in the human body because they are the cells involved in sexual reproduction, which requires the combination of one set of chromosomes from each parent to form a new individual. The rest of the cells in the human body are diploid and do not participate in sexual reproduction.
Gametes, which are also known as sex cells, are the only haploid cells in the human body because they are the cells that are involved in sexual reproduction. Haploid cells have a single set of chromosomes, while diploid cells, which make up the majority of cells in the human body, have two sets of chromosomes.
During sexual reproduction, gametes from each parent combine to form a new individual. The gametes from each parent contribute one set of chromosomes to the offspring, so that the resulting diploid cells in the offspring have two sets of chromosomes, one set from each parent.
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Answer:
Human gametes are haploid (n) as they are formed by meiosis during the process of gametogenesis.
Explanation:
Haploid can be described as a cell that contains a single set of chromosomes. The term haploid can also refer to the number of chromosomes in egg or sperm cells.
Haploid gametes lead to the fusion of male and female gametes, by which a diploid zygote is formed and the number of chromosomes remains the same in the progeny.
In humans, gametes are haploid cells that contain 23 chromosomes.
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Why is herbivores insect is least common?
Most insects are herbivores in a stage of their life, but most of the time later on they because omnivorous (plant and meat eater) so therefore they don't stay herbivorous for long. Also, most herbivorous insects get eaten quite often.
The definition of a parasitic relationship is what
Answer:
A parasitic relationship is one in which one organism, the parasite, live off of another organism, the host, harming it.
state two types of water
Answer:
Mineral water and Distilled water
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What would happen if a new predator were introduced to prey with which it has not coevolved?
Answer:
If a new predator were introduced to prey with which it has not coevolved, it could have a devastating effect on the prey species. The prey species may not have adapted behaviors or physical characteristics to protect themselves from the new predator, making them easy targets for predation. This could lead to a decrease in the prey population and an increase in the predator population, ultimately resulting in the destruction of the prey species. Additionally, the introduction of a new predator could disrupt the balance of the existing food web, which could have a ripple effect on other species in the ecosystem.
Explanation:
Answer: leading cause of extinction is the introduction of predators into an isolated system like an island or a lake
Who is promotor of binomial system of nomenclature
Answer: Linnaeus
Explanation: Linnaeus established the practice of binomial nomenclature—that is, the denomination of each kind of plant by two words, the genus name and the specific name, as Rosa canina, the dog rose.
The following shows a food chain in a garden environment.
Sun → grass → grasshopper → bird
Which statement describes the energy transfer in this food chain?
A.The energy from the bird is transferid back to the grasshopper.
B.Only a small amount of the energy the bird receives from the grasshopper is used by the bird.
C.The grass passes all of the energy it receives from the sun to the grasshopper.
D. More energy is transferred from the grass to the grasshopper than from the grasshopper to the
bird.
list two differences between dominant and recessive trait and what present in plant in F2 generation by around in mental cross between round and wrinkled plant
A round seed phenotype and the dominant allele for the roundness trait were present in three-fourths of the f2 plants. Dominant covers the trait of recessive.
What is dominant?An allele is a gene form that can appear as a pair and exhibit either a homozygous or heterozygous phenotype of a characteristic.
Both dominant and recessive forms of the trait can be expressed by these genes. When two organisms are crossed, the F2 generation of the progeny exhibits three phenotypes: homozygous dominant, heterozygous dominant, and recessive.
Therefore, the roundness trait was present in three-fourths of the f2 plants.
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Cell wall hut not cell
,
Robert Hooke discovered
Organelles.
Answer:
Explanation:
WHAT IS YOUR QUESTION ??
Gus drew a diagram to compare marsupial and placental mammals
which label belongs in the area marked Y?
a) have a two-week gestation period
b) young develop inside body
c) sometimes lay eggs
d) are endotherms
please help fast, thank you!
Answer:
A
Explanation:
ii) Glucose is absent in urine yet present in glomerular filtrate
Answer:
Glucose will be present in blood plasma and glomerular filtrate, but not present in urine (normally) This is because the glucose is selectively reabsorbed in the proximal convoluted tubule. It is reabsorbed from the filtrate into the blood by active transport (symport with Na+ ions)
Explanation:
Cathleen Crain of LTG Associates, Inc. discovered through her participant observation with the HIV/AIDS outreach worker that:
a. men in the community were not using condoms.
b. women prostitutes never carried condoms.
c. the outreach worker had poor communication skills.
d. the outreach worker had stereotypes of prostitutes.
Answer:
d. the outreach worker had stereotypes of prostitutes.
Explanation:
Cathleen Crain is a co-founder of the LTG associate Inc. She is an anthropologist and her company has been doing absolutely well in anthropology based research, as a socula scientist, she is also a health research analyst specializing in community health and development. Through her participant observation with the HIV/AIDS outreach worker, she noticed the outreach worker had a stereotypes of prostitute.
The disadvantage of batch fermentations, as opposed to continuous feed systems, is that
Select one:
a. new substrate must be added to the fermentor continuously for the fermentation to continue.
b. there is a limit to the amount of product formed since all materials are added to the fermentor at the beginning.
c. it is small scale production of a product.
d. the end product is not as pure as the product made by the continuous feed process.
Answer:
according to me may be option number b
Dimethylmercury is non polar volatile liquid that is lethal to animals. It’s structure is CH3-Hg-CH3. Predict the mechanism and timeframe of passage into cells for dimethylmercury based upon its chemical properties.
The dimetylmercury is a fat soluble compound thus it can pass into the cells easily through the lipid bi layer.
How does the compound work?We know that the compounds that are water soluble would have to be ionic. It is very vital that we start the discussion from here because we ought to know that the compounds that are covalent would not be found to dissolve in water.
On the other hand, we have to recall that the entrance of the cell is a nonpolar region as that area is mostly filled with the fats that we can find around there. It then means that the compounds that may be able to pass into the cell very freely has to be the compounds that are fat soluble based on its chemical properties.
We must recall that Dimethylmercury is non polar volatile and as such it can be able to pass through the membrane and enter into the cells.
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period when cell is not engaged in division
Interphase is the period of cell cycle in which the cell is not engaged in any kind of cell division. This phase is marked as the preparatory phase for the actual cell division.
What is Cell cycle?The cell cycle is a series of steps during which the chromosomes and other cellular material double to make two copies of the genetic material. The cell then undergoes division to form two daughter cells, each of the daughter cell receiving one copy of the doubled chromosomal material. The cell cycle is complete when each of the daughter cell is surrounded by its own outer membrane.
The interphase is the period when the cell is in a non-dividing state of the cell and this phase can be in different stages: the first gap (G1) between the last mitosis (M) and the S-phase (phase of DNA synthesis) and the second gap (G2) phase between the completion of the S-phase and the next mitosis (M).
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Over generations of time, what would you expect a population of organisms that are well adapted to their environment to do?
Increase
Decrease
Become Extinct
Stay the same
Answer:
Increase.
Explanation:
Because they have to adapt if they don't the will be extinct.
What process occurs when molecules move from a crowded area to a less crowded area ?
Show/tell me the EVIDENCE
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Which of the following is a place where you would expect to find an immovable joint in the body?
A. wrist and hand
B. shoulder
C. ribs and sternum
D. back bone
Answer:
i think backbone is the correct answer
Answer:
Explanation:
I believe the answer is C) Ribs and sternum
3. Which of the following statements is not part of modern cell theory? A. All living things are made up of multiple cells. B. All living organisms are made up of cells. C. Cells are the basic building blocks of life. D. All cells come from pre-existing cells.
Answer:
A. All living things are made of multiple cells.
Which of the following is the definition of animal husbandry?
ANSWER: C. keeping, caring for, and at times, breeding animals
A. mating animals to create or maintain specific breeds
B. selecting two animals to mate because of specific traits
C. keeping, caring for, and at times, breeding animals
D. raising fish in open-ocean farms or artificial environments
Answer:
animal husbandry refers to keeping,caring and sometimes breeding animals
Answer: The correct answer is C. keeping, caring for, and at times, breeding animals
Explanation: This answer has been confirmed correct.
What effect would a series of major volcanic eruptions have on global climate change?
A) the increase in atmospheric particles with increased range globally
B) The blanket effect of Ash would increase temperatures globally
C) atmospheric ash circulation would cause extreme temperature fluctuations and rainfall
D) Ash clouds would reflect the suns energy and decrease temperatures globally
The effect that a series of major volcanic eruptions would have on global climate change would be Ash clouds would reflect the sun's energy and lower temperatures globally.
What is volcanic winter?A volcanic winter is the reduction in temperature caused by volcanic ash and sulfuric acid droplets obscuring the sun, usually after a volcanic eruption. Long-term cooling effects are primarily dependent on the ejection of sulfide compounds in aerosol form into the upper atmosphere.
With this information, we can conclude that a major eruption would cause a volcanic winter, with a reduction in temperatures globally.
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This is when a weaker animal copies stronger animals' characteristics to
warn off predators
Explanation:
Mimicry: When a weaker animal copies stronger animals' characteristics to warn off predators.
Which of the following science related statements are observations rather than opinions? Select all that apply.
The most frequent cause of coronary artery disease is the accumulation of fatty plaques in the arteries (atherosclerosis). Poor eating habits, inactivity, obesity, and smoking are risk factors. Choosing a healthy lifestyle can help reduce the risk of atherosclerosis. Thus option C, D is correct.
What are the most common heart disease?The most prevalent kind of heart disease, coronary heart disease, will claim 382,820 lives in 2020. 20.1 million adults aged 20 and older, or 7.2%, have CAD. Nearly 2 in 10 fatalities from CAD will occur in adults under the age of 65 in 2020.
Therefore, In the US, heart disease is the leading cause of death. Additionally, fewer bees have been visiting my garden lately, indicating that bee populations are declining.
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The given question is incomplete. Complete question is given below:
Which of the following science related statements are observations rather than opinions? Select all that apply.
Whaling should be banned.
Cancer is the worst of all diseases.
Ocean acidity was greater in 2010 than in 2000.
Heart disease is the major cause of death in the United States.
Fewer bees have been in my garden recently, so bee populations must be decreasing.
Question 18(Multiple Choice Worth 2 points)
(06.04H MC)
Which of the following occurs during birth?
O Pituitary hormones are released, and the fetal heart begins to beat.
The fetal nervous system becomes activated, and the cervix opening expands.
The fetal nervous system becomes activated, and the fetal heart begins to beat.
O Pituitary hormones are released, and the opening of the cervix expands.
Answer:
options 2 The fetal nervous system becomes activated, and the cervix opening expands.
A division is always associated with _____.
A. plants
B. animals
C. plants or animals
D. plants and animals
Division is a biological categorization level that is used to categorize or research plants. Consequently, a division must be related to plants.
What does biological classification imply?Living creatures are categorized by scientists based on their biological characteristics. Organisms are grouped based on how similar they are. In the past, similarity was determined by examining the physical characteristics of an organism, but modern classification uses a variety of techniques, including genetic analysis.
Which are the three categories used in biology?As according similarities and differences, recognized species are divided into several groupings or taxa, which is the definition of classification. Phylogenetic classifications, Natural classifications, & Artificial classifications are the three categories of categorization.
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4. If the mass of two objects increases and the
distance between them stays the same, what happens to the gravitational force
between the two objects?
A. It decreases.
B. It remains the same.
C. It fluctuates.
D. It increases.
Answer:
As the mass of either object increases, the force of gravitational attraction between them also increases.