Explanation:
The Earth's geologic past is divided into hierarchical time periods. This hierarchy comprises eons, eras, times, epochs, and ages, from largest to smallest. The Cenozoic, Mesozoic, and Paleozoic Periods are the three main divisions of the Phanerozoic.
The geological timescale is the official earth clock and differs from the way we organize time using a clock, as the planet's time is too long for us to use measures of hours.
Geologic timescalePlanet Earth is about 4.5 billion years old. To better understand its history, scientists divide geologic time into five levels of classification, called chronostratigraphic units:
EonsErasPeriodsEpochsand ages.Eons are large and indeterminate spans of time and are divided into four classifications:
Phanerozoic (last 542 million years)ProterozoicArcheanand Hadean.Of them, only the Hadean is not divided into ages. The ages are characterized according to the different positions of continents, oceans and their living beings. Within the ages are divided in the periods. Epochs, in turn, are divisions within periods and are divided into ages. According to the researchers, we currently live in the Quaternary period of the Cenozoic era.
To get a rough idea of how much the existence of the human being is a mere recent episode in Earth's geological time, we use some analogies. For example, if the entire history of the planet were summarized in the twenty-four hours of a day, the existence of humanity would have occurred in the last three seconds of that same day.
Understanding the dimension of geological time and its scales of measurement becomes a fascinating mental exercise to better understand the role of man in relation to this temporality and his role as heir of all the transformations that have taken place in terrestrial space throughout the geological ages.
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What is the name of the process that results in a karyotype like the one pictured?
O A. Nondisjunction
O B. Crossing over
O C. Gene mutation
O D. Mitosis
HELP SAMA PLZZ
Answer:
THIS IS CROSSING OVER- DNDNNFNCBXJXBDJBXJX WHY DO YOU HAVE SUCH HARD QUESTIONS-
You are concerned with surveying the protozoa in the arboretum soil. While most commonly thought to live exclusively in aquatic environments, protozoa can play an important role in the nutrient cycling that takes place in soil. In addition, protozoa can help maintain the proper balance of bacterial populations within soil, as bacteria are a primary source of food for protozoa. Protozoa are extremely diverse. However, there are three characteristics common to all organisms called protozoa. What are these three characteristics
Answer:
eukaryotic, unicellular, without a cell wall
Explanation:
Protozoans are single-celled eukaryotes that generally move through cilia, flagella, or amoeboid motion. After their discovery, protozoans were considered as single-cell animals due to their animal behavior (including predation and motility), and because they don't have a cell wall, as observed in algae and plants. Some examples of protozoans include Paramecium, Amoeba, and Trypanosoma. Nowadays, the term 'protozoans' is still used to describe unicellular eukaryotic organisms from the Protista kingdom that are heterotrophs, i.e., unicellular microorganisms that acquire energy and nutrients from other organic sources, especially plant and animal matter.
HELP. This is due in a bit. Giving Brainliest!!
You are traveling 60 mi/hr. You have traveled for 3 hours, how far have you gone?
Answer:
180 miles is how far you have gone.
Answer:
180 miles ( 60 mi/hr will get you a mile a minute )
Explanation:
help i don’t know the answer
Answer:
I'm pretty sure it is the first option.
The temperate grasslands biome includes regions of several continents. What do all of the regions have in common? A. the same species of grazing animals B. the same species of grasses C. the same seasonal patterns of temperature and precipitation D. the same amount of land that is covered in grasses
Answer:
C
Explanation:
temperate biomes have a pretty stable climate
. Rain washing away soil from a hillside is an example of.... *
1 point
weathering
erosion
deposition
Plz helpp
Answer:
erosion
Explanation:
rain moving soil is the earths crust slipping, also known as erosion
Answer:
Erosion
Explanation:
because weathering is the breakdown of rocks by physical or chemical weathering, deposition is the dropping of eroded material, and erosion is the movement of rock material from one place to another.
Hope you understood the concept at least.
Calculate the Simpson’s diversity index using the information below.
A 3 column table with 3 rows. Column 1 is labeled Species with entries American bullfrog, Pool frog, Common toad. Column 2 is labeled Pond 1 with entries 300, 335, 365. Column 3 is labeled Pond 2 with entries 20, 49, 931.
What is the Simpson’s diversity index for pond 1? Round to the hundredths place.
Answer:
0.67
Explanation:
Got it right on edge
Answer:
the answer is 0.66
Explanation:
Recall in class the example of incorporating heavy or light nitrogen labels into DNA to investigate how DNA is replicated. Imagine if, instead of labeling DNA, the experiment used heavy labeled RNA bases. What would be the outcome if you examined the DNA strands after completion of DNA replication in the presence of heavy labeled RNA bases?
Answer: You would not notice any difference or any labeled base, because RNA is not used to make DNA.
Explanation:
DNA is a molecule that contains the genetic information in all living things. The molecule consists of two strands that wind around each other to form a double helix structure where the strands are joined by hydrogen bonds. It is a nucleotide polymer where each nucleotide consists of a sugar called deoxyribose, a nitrogenous base (which can be adenine, thymine, cytosine or guanine) and a phosphate group (derived from phosphoric acid). What distinguishes one polynucleotide from another, is the nitrogenous base and thus the sequence of DNA is specified by naming only the sequence of its bases. The sequential arrangement of these four bases along the chain is what encodes the genetic information.
Consider that DNA replication is semi-conservative, which means that each strand of the DNA double helix functions as a template for the synthesis of a new complementary strand. This process leads from one starting molecule to two "daughter" molecules, in which each new double helix contains one new and one old strand. Then, if nitrogen tags are incorporated into the DNA, they will register on the old strand of the new DNA molecule.
On the other hand, RNA (ribonucleic acid) is a molecule similar to DNA but has only one strand and consists of a sugar (ribose) and alternating phosphate groups. Attached to each sugar is one of the four bases adenine, uracil, cytosine or guanine. The process of RNA synthesis, called transcription, consists of making a complementary copy of a piece of DNA. During this process, an enzyme called ARN polymerase, adds nucleotides that are complementary to the DNA strand. Then, this new RNA strand has new nucleotides. Thereby, if you examine the DNA strands after completion of DNA replication in the presence of heavy labeled RNA bases, you would not notice any difference or any labeled base, because RNA is not used to make DNA.
Which answer is the best representation for the shaded region?
Answer:
peoples do worship
everyone worships
natural selection vs artificial
Answer:
Please read the explenation for I must go into detail to explain this.
Explanation:
So before I answer your question, I am going to explain what the two things are.
Natural selection:
Natural selection is the evolution of traits in a species due to changes in genetics that is mainly caused by enviormental problems and changes.
If this is a bit confusing, here is an example:
Lets say that a Mandarin beatroot lizard is being killed off by the Mandarin carrot bird because all the trees in the area have turned yellow. 100 years from the time this happened, the Mandarin beatroot lizard that's population was 85% red and 15% yellow is now 90% yellow and only 10% red.
This is because of natural selection. THe Mandarin carrot bird was killing a large portion of the red population. The yellow population was killed only occasionaly. When the Madarin beatroot lizard went to breed, there were more yellow lizards breeding than red lizards. If you know how genetics work, then you know that in simple terms, this means more lizards will be yellow in the next genetration.
Slowl;y as the generations passed, more and more yellow lizards were bred and born. 100 years later, over generations and generations, the population was almost coimpeltly yellow.
Artifical selection:
Artifical selection is where the human race selects a species and bred specific organisms of that species so that the specific trait being bred for is more evident in the species.
Again, if this is confusing, here is an example:
The lab NV-110 was taking bearlybubble wolves with shorter noses and breeding them together. After 30 years, and many generations, the bearlybubble wolves had noses that were half a inch shorter than the orginal bearlybubble wolves. When the new wolves were let into the forest they had been taken from, half of the died in the first week due to starvation.
The humans took specific traits in a species and bred them together, this process was repeated over 30 years. The specific trait of the new generation of orgniasms has been changed, but this change affected the orgnaisms survive, and was dentrimental to the species.
So now knowing the two things, what do you think the difference is? Think about ti for a minute before reading more.
The difference betweent the two types of selection is:
Artifical selection can harm or possibly nuetral for the organism, wheareas natural selection will be helpful or nuteral to the organism.Artifical selection involves humans, wheareas naturals election does not,Artifical selection does not need any specific change in the enviorment or world to happen, wheareas natural selection does.Artifical selection is usally quicker than natural selction for artificial selection is purposful breeding, whereas natural selection is by-chance breeding.I hope this make sense to you, I can try to make this simpler or more detailed if you want me to. ;)
Jaguars are a keystone species in the Amazon. Describe how they can be so essential to the ecosystem despite
being significantly less abundant than many other species.
Answer:
jaguars are keystone species because they feed herbivorous species that might decimate the plants of the ecosystem
Explanation:
Keynote species are species that help to maintain the homeostasis of the ecosystem so if they lack then the ecosystem would change drastically. Moreover, a top predator is a predator that occupies the highest trophic level in the food chain. Jaguars are both keystone species and top predators that feed herbivorous species, maintaining the health of the food chain by eliminating the excess of primary consumers that otherwise would feed too many plants (i.e., primary producers) which produce and store energy at the bottom of the food chain.
I'll give Brainlyest if I can just please hurry
Answer:
hi
Mostly will be earthquake
Answer:
I would say earthquakes, and i also recommend using jiskha to get answers to schoolwork, it gives better answers then brainly. Good luck:)
Explanation:
Jack covers his ears when he hears a loud sound. Which is correct?
Preparing Informative Presentations
There are a variety of reasons a person presents a speech. Perhaps the most common reason is to present timely or useful information to an audience.
Such speeches are called expository speeches, and they rely on the effective transfer of information to listeners. An expository speech could be a definition speech, which explains an object, person, or event. It could also be a demonstration speech, which explains to the audience how to complete a process or task. A successful informative presentation depends on a few key steps that will help you prepare, inform, engage, and educate.
Based on the tips in the article, come up with a topic of your own that would make an interesting demonstration speech?
Answer:
How fast a 1960 Dodge Challenger can go versus how fast a 2020 Dodge Challenger can go.
what does Risk Management mean
Answer:
(in business) the forecasting and evaluation of financial risks together with the identification of procedures to avoid or minimize their impact.
Explanation:
Answer:
Risk management mean managing the risks you take if financially, biologically, and in life. Indentifying, assesing, and controlling risks.
What are 3 ideas a family has on individuals?
Answer:
l
ove and caring for other family members; providing security and a sense of belonging; open communication; making each person within the family feel important, valued, respected and esteemed.
Explanation:
love and caring for other family members; providing security and a sense of belonging; open communication; making each person within the family feel important, valued, respected and esteemed.
List 4 significant problems with nuclear power plants....,,,,,?
Which of the following measures would improve energy
efficiency/conserve energy?
1. Increasing fuel economy standards on cars
2. Purchasing larger in-home water heaters
3. Unpluging electronics when not in use
4. Eating more locally sourced food
5. Removing tax incentives on home-solar purchases
O i, ii, iii, iv, and v
O i and iv only
O i, iii, and iv
O i, ii, and iii
Answer:
l
Explanation:
what is unhealthy lifestyle choice
Answer:
A dissipated personal modus operandum, which may be characterized by one or more of the following: substance abuse–eg, alcohol, drug and/or tobacco use, debauchery, sexual promiscuity and/or teenage pregnancy, poor sleep hygiene, domestic violence, and other unhealthy habits
Explanation:
Answer:
Eating fast food, not getting daily exercise (going for a walk or simply just stretching) sitting on your phone all day watching tik. Toks and other similar videos, being sad and depressed but still saying that you will start living a healthy lifestyle "tomorrow". That is an unhealthy lifestyle choice (which I had), but by making small differences every day, you will slowly but surely change your lifestyle and turn your life 180°. Just know that big things don't happen overnight. This is a sentence that is often said, but not everyone can understand it.
:-)
A scientist wants to travel to the center of the Milky Way galaxy. It is 26,400 light-years from Earth. Would the
scientist ever reach his destination? Explain your answer.
Answer:
no because he wouldn't live long enough to survive because ti would take like a hundred to a thousands of year to reach there because there r about 9.7 million kilometers in a light year
Explanation:
What is most likely observed when the temperature of water increases and researches 100c ? A. The water begins to harden . B The water begins to form water vapor. C The water level begins to increase. D the water begins to melt.
Answer:
C should be your answer!! Mark Brainliest pls!
Explanation:
Which consequence is a direct result of human population growth
Answer:
One of the largest environmental effects of human population growth is the problem of Global warming.
Economic development, urbanization, energy consumption, transportation/motorization due to rapid population growth are major driving forces of air pollution in large cities.
In order to support the growing population, forests are being destroyed at an alarming rate. Deforestation occurs when humans clear forests to use the land either for agriculture or for habitation. This leads to soil erosion and the extinction of plant species. Land animals also decline in numbers and even face extinction due to human expansion that encroaches on their natural habitat and limits their ability to spread geographically.
Humans also continue to put a great demand on the natural resources of our planet. Many non-renewable resources are being depleted due to the unrestrained use of fuel and energy. Many parts of the world also suffer from a shortage of food and water.
The growth of the population puts larger demands on our already limited resources. The environment on earth is suffering from the growth of the global population. The depletion of resources and biodiversity, the production of waste, and the destroying of natural habitat are serious problems.
Explanation:
sorry it is so long but here u go plz leave a like and a rating and brainliest
The direct result of human population growth include consequences such
as pollution.
Increase in human population has led to an increase in industries and
use of automobiles which emits different gases which are harmful. They
deplete the ozone layer and cause global warming with incidences of
sunburns while others cause respiratory diseases such as asthma etc.
it has also resulted in overcrowding and reduced fresh oxygen due the
structures for different purposes.
Read more on https://brainly.com/question/24717650
Which of the following is a type of adaptation that animals can have?
Physical characteristics
Behaviors
Life cycle differences
1. I and II
2. I and III
3. II and III
4. I, II, and III
Help pleasee | A damselfly nymph sheds its skin several times, as it grows into an adult. Which statement explains why it does this? No links!!!
A. It is a mammal.
B. It is an invertebrate.
C. It goes through complete metamorphosis.
D. It goes through incomplete metamorphosis.
Answer:
D. It goes through incomplete metamorphosis.
Explanation:
Damselflies do not hide away inside a pupa to transform into their adult form. Instead, they shed their skin several times as they grow, changing shape a little each time. This process is called incomplete metamorphosis.
What type of invertebrate are robber crabs
Answer:
Arthropods
Explanation:
Robber crabs belong to the Phylum Arthropoda of the invertebrates in the Kingdom Animalia.
A scientist does an experiment in which she removes the offspring of rats from their mother at birth and has her genetics students feed and rear the offspring. Assuming that the students do not lick and groom the baby rats as the mother rats normally do, what long-term behavioral and epigenetic effects would you expect to see in the rats when they grow up
Which of the following best describes the use of population models in biology? (SC.7.N.3.1
O They are generally easy to construct.
O They can represent reality precisely.
They are used when no observations have been made.
O They can help predict outcomes
(25 points)
Answer:they can help predict outcomes
Explanation:
In the image below, where are the carbon-containing gases resulting from combustion most likely to end up?
Atmosphere
Cryosphere
Geosphere
Hydrosphere
Answer:
A. Atmosphere
Explanation:
Determine the value of the charge of an electron