Ecosystem productivity is principally limited by
a. sunlight and nutrient availability
b. water and nutrient availability
c. the availability of time and nutrients
d. none of the above
Answer:
a
Explanation:
If a period contains many fossils of species that previously weren't found, what type of event most likely took place on Earth?
Question 17 options:
Natural selection
Population equilibrium
Punctuated evolution
Mass extinction
Answer:D
Explanation:
Answer:
Mass extinction
Explanation:
This mass introduction of new fossils points to a preceding mass extinction where many of the existing species died off.
17. RNA contains instructions to make a specific protein and is produced from genetic information in the nucleus of the cell. Which best identifies this process?
A mutation
B replication
C translation
D transcription
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RNA contains instructions to make a specific protein and is produced from genetic information in the nucleus of the cell. This process is called translation. Therefore, option C is correct.
What is translation?The translation is the creation of a polypeptide chain from mRNA codons. The process is broken down into four steps: tRNA charging, initiation, elongation, and termination. mRNA is made from DNA by transcription, and then protein is formed from mRNA by translation.
The process of translating mRNA into the chain of amino acids that makes up the produced protein occurs in ribosomes in the cytoplasm of the cell.
RNA contains instructions to make a specific protein and is produced from genetic information in the nucleus of the cell. This process is called translation. Therefore, option C is correct.
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Explain how vaccinations can protect you from infectious diseases such as measles and chicken pox.
Answer:
Look at explanation.
Explanation:
So, most vaccines help us against infectious diseases by inserting a weak or dead version of the virus. This makes your body create antibodies to fight against the virus. So most vaccines prepare your body to be able to TRY and fight the virus by giving you a small taste of what its like.
Hope this helps(would be grateful if you give this brainliest. I need for the lvl up...)
4. Predict what a fossil that illustrates the
evolution of a bird from a reptile might look
like.
Answer:
The discovery that birds evolved from small carnivorous dinosaurs of the Late Jurassic was made possible by recently discovered fossils from China, South America, and other countries, as well as by looking at old museum specimens from new perspectives and with new methods. The hunt for the ancestors of living birds began with a specimen of Archaeopteryx, the first known bird, discovered in the early 1860s. Like birds, it had feathers along its arms and tail, but unlike living birds, it also had teeth and a long bony tail. Furthermore, many of the bones in Archaeopteryx's hands, shoulder girdles, pelvis, and feet were distinct, not fused and reduced as they are in living birds. Based on these characteristics, Archaeopteryx was recognized as an intermediate between birds and reptiles; but which reptiles
What statement most directly demonstrates a way that the geosphere is involved in the nitrogen cycle? A. Fossil fuels form when decaying organisms are buried underground for long periods. B. Animals break down proteins and other nitrogen-containing compounds into waste products. C. Some plants absorb nitrogen from the air and use it to form proteins. D. Bacteria that convert ammonia into nitrites and nitrates are found in the soil.
Answer:bacteria that convert ammonia into nitrites and nitrates are found in the soil.
It on Plato
Answer:
bacteria that convert ammonia into nitrites and nitrates are found in the soil.
Explanation:
Which statement about rocks is not true? A All rocks are made of minerals. B Rocks come in different shapes, colors, and sizes. C A rock is always made up of just one kind of mineral.
Answer:
C. A rock is always made up of just one kind of mineral
Which of the following rocks would most likely be found near a volcano?
marble
sandstone
limestone
basalt
Answer:
C. limestone
Explanation:
Answer: the answer to your question is limestone so that is ur answer tothe question
Explanation:
sorry im dislexic
A woman with B-blood has a baby with AB + blood. What are the two possible blood types (phenotypes) of the father?
Answer:
The father has A+ or AB + phenotypes
Explanation:
Oxygen rich blood returns from the lungs to the heart. Which 2 systems are most directly involved in this process.
Respiratory and circulatory
Excretory and digestive
Circulatory and excretory
Digestive and respiratory
Answer:
Respiratory and circulatory
Explanation:
The Circulatory System Works in Tandem with the Respiratory System. The circulatory and respiratory systems work together to sustain the body with oxygen and to remove carbon dioxide. Pulmonary circulation facilitates the process of external respiration: Deoxygenated blood flows into the lungs.
The two systems which are most directly involved in this process are respiratory and circulatory systems.
What do you mean by oxygen-rich blood?In the lungs, oxygen is put into the blood, and carbon dioxide is taken out of the blood during the process of breathing. After the blood gets oxygen in the lungs, it is called oxygen-rich blood.
During the whole process of breathing, the respiratory and circulatory systems play a major role in the separation of oxygen-rich and oxygen-poor blood.
Therefore, the two systems which are most directly involved in this process are the the respiratory and the circulatory systems.
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Dont know if i am right
Answer:
I think you're correct
Explanation:
Answer:
B
Explanation:
you are correct. B is the only option that is incorrect In this.
which phase of cell division is shown?
Answer:
cell division is shown in anaphase
PLS HELP ME ILL GIVE BRAINLIEST
Answer:
Because of the animals present there.
Explanation: Birds and Turtles lay eggs with shells therefore the shells are more likely to be found in their landscape
All plants are subject to photorespiration, but not all plants are equally affected by photorespiration due to the environment in which they live.Choose one of the two pictures (A or B) and explain why that environment would increase the likelihood that those plants would be greatly affected by photorespiration. Your answer should describe the nature of the environmental impact and how the impact would affect the anatomy and physiology of photosynthesis of the plant.The environments are:A. Desert. Prairie
Answer:
Desert.
Explanation:
Photorespiration occurs in C3 plants because their photosynthetic activities are disturbed due to high temperature of the environmental while on the other hand, C4 plants has absent this photorespiration process. The desert environment has direct impact on the plants having photorespiration due to its high temperature of the surrounding as compared Prairie where the environment is moderate so the C3 plants has high chances of photorespiration in desert condition as compared to Prairie.
what are the merit of
indigenous education
Answer:
It was a way to protect, preserve and develop traditional indigenous skills and cultures. Education was a significant step towards empowering indigenous peoples to participate more fully in their communities. It was an indispensable asset to attain freedom and social justice.
Answer:
The core of indigenous education in Africa focused on providing each individual in the community with knowledge, practical skills and attitudes in order to prepare them to for his/her role in the society. It is a holistic system, in which apprenticeship, story telling, proverbs and myths played an important role. Traditional education developed in the ‘learners’ a sense of obligation towards the community and made learners to appreciate the history, language,customs and values of the tribal group, keeping in touch with their heritage, their cultural roots. Western education alienates young Africans from their cultural heritage.
Which type of fuel produces greenhouse gases?
A. Hydroelectric
B. Wind
C. Biomass
D. Nuclear
The type of fuel produces greenhouse gases is the Biomass fuels.
Who are fossil fuels?Fossil fuels include oil and its derivatives, coal and natural gas, all formed by the decomposition of living organisms.
The main cause of the greenhouse effect is industrialization. Due to this process, the burning of fossil fuels has intensified in recent centuries. The main products of the combustion reaction of these reagents are the gases mentioned above as the main ones for the greenhouse effect.
in this case, biomass fuels are plants, animals and their derivatives are biomass. Use as fuel can be made from its raw form, such as wood, agricultural products and residues, forest residues, livestock residues, animal excrement and garbage. In other words, are fossil fuels and podruces greenhouse gases.
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33. There is never any competition for food or living space among living organisms.
True
False
Answer:false
Explanation:
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer: c
Explanation: :)
How does the photolysis of water benefit the biosphere?
Tendons play an important role in the body. What is the function of tendons?
Answer:
A tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to move the bone or structure.
The molecules of the electron transport chain perform redox reactions in order to
a. concentrate H+ in the intermembrane space.
b. move electrons to ATP synthases.
c. reduce NAD+ to NADH.
d.oxidize oxygen to form water.
what are some injuries where you don't feel pain?
Answer:
Jumping off a high building
Explanation:
your body wont feel the pain bc u will die to fast and ur brain cant proccess the pain btw dont k----ys
1. What causes community resilience?
Answer:
Community resilience is the sustained ability of a community to use available resources to respond to, withstand, and recover from adverse situations. This allows for the adaptation and growth of a community after disaster strikes. Communities that are resilient are able to minimize any disaster, making the return to normal life as effortless as possible. By implementing a community resilience plan, a community can come together and overcome any disaster, while rebuilding physically and economically.
Explanation:
Secondary succession occurs in which of the following
situations?
SELECT ALL THAT APPLY
a after a fire
b after a flood
C
after farming
d after logging
Shop
Answer:
A, B, C and D
Explanation:
Definition: This is a highly developed and specialized organ that is an extension of the central nervous system, and functions to take in information and help send it to the brain. Example: eye, tongue, antennae
Answer:
Sensory Organs
Explanation:
got it correct
Which of the following best describes what causes plasma cells to form during a humoral immune response?
a. Memory B cells signal phagocytes to attack infected cells and divide, producing plasma cells.
b. Memory T cells recognize antigens and signal T lymphocytes to divide, producing plasma cells.
c. The antibodies on the surface of B cells bind to antigens, and the B cells grow and divide, producing plasma cells
d. The antigens on the surface of a pathogen attack healthy cells, and the resulting inflammation signals helper T cells to divide, producing plasma cells.
Answer:
Explanation:
Answer:
C. The antibodies on the surface of B cells bind to antigens, and the B cells grow and divide, producing plasma cells.
Explanation:
I took the test
LO NECESITO URGENTEMENTE, PORFAVOR AYUDENME INSTRUCCIONES: lee el siguiente texto y completa las ideas con las siguientes palabras, (pueden sobrar algunas): mitótico, meiótico, haploide, somáticas, unión, gametos, fecundación, genética, variación, iguales, diferentes.
Reproducción sexual
La reproducción sexual consisten en la ___________ de dos gametos uno femenino y otro masculino, para formar un nuevo individuo con características provenientes de ambos progenitores. Los ___________ son células especializadas que se forman por un proceso __________ y tiene en su núcleo la mitad de la información __________ de un organismo, por lo que reciben el nombre de células ___________ de manera que cuando se une sus cromosomas se forman células diploides característico de la especie. La característica más importante de este tipo de reproducción es la ___________ genética que implica que los descendientes tengan características de sus dos progenitores, por lo que son ___________ a ellos. El proceso en el que se une las células sexuales se le conoce como ___________. En los animales esta pude ser interna o externa.
Answer:
La reproducción sexual consisten en la unión de dos gametos uno femenino y otro masculino, para formar un nuevo individuo con características provenientes de ambos progenitores. Los gametos son células especializadas que se forman por un proceso meiótico y tienen en su núcleo la mitad de la información genética de un organismo, por lo que reciben el nombre de células haploides de manera que cuando se une sus cromosomas se forman células diploides característico de la especie. La característica más importante de este tipo de reproducción es la variación genética que implica que los descendientes tengan características de sus dos progenitores, por lo que son diferentes a ellos. El proceso en el que se une las células sexuales se le conoce como fecundación. En los animales esta pude ser interna o externa.
Explanation:
Los gametos (óvulos y espermatozoides) son células germinales especializadas que se desarrollan a partir de un proceso llamado gametogénesis (espermatogénesis en machos y ovogénesis en hembras). El proceso de gametogénesis implica un tipo de división celular llamado 'meiosis' donde la cantidad de cromosomas se reduce a la mitad. En humanos, el número cromosómico diploide (2n) de 46 cromosomas se reduce a un número haploide (n) de 23 cromosomas. La fecundación es el proceso por el cual los gametos se fusionan durante la reproducción sexual para producir un cigoto diploide. En la reproducción sexual, el aumento de la variación genética en la progenie es un resultado de tres procesos diferentes: la unión aleatoria entre gametos durante la fecundación, la distribución independiente de los cromosomas durante la gametogénesis y el entrecruzamiento (recombinación o crossing over) entre cromátidas de cromosomas homólogos durante la meiosis. Finalmente, en animales, la fecundación puede ser interna, la cual se produce mediante la unión de los gametos dentro del cuerpo de la hembra (por ejemplo, gallina, leona, cebra, etc.), o fecundación externa, donde la fusión de gametos se produce en el ambiente externo (por ejemplo en peces, sapos, ranas, etc.).
Describe the competitive exclusion principle and its effects on competing species
. Help please!! A student is modeling the steps in the complete metamorphosis of an insect. Which step should he draw
after the adult phase? No links!!!
A. egg
B. pupa
C. larva
D. butterfly
Answer:
Egg
Explanation:
After the adult phase the cycle should start over again
need helpppppp so can some of ya help me pls
Answer:
Hexagonal prisim
Answer:
A= incorrect (no rectangle)
B=correct
C=incorrect (5 points)
D= incorrect (8 points)
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