Answer:
Millions of years from now, paleontologists may dig into Earth and uncover fossils from our own time. They may, like scientists today, construct a chronology of what came before them, watching past species popping into—and later out of—existence. Today, humans are continually driving species to extinction—by one estimate, almost 500 vertebrate species have gone extinct in the past 100 years—but will those future scientists be able to tell? New research suggests that it might not be easy: Only a small proportion of these human-caused extinctions will leave behind a fossil trace—and the most threatened species are the ones least likely to be preserved for posterity.
The history of life on Earth is punctuated by what researchers call the “Big Five” mass extinctions, a group that includes the dinosaur-killing Cretaceous-Tertiary extinction and several other, even more severe, events. Many scientists now want to add a sixth: the one that humans are causing all over the globe today. But it’s hard to gauge just how severe the current extinction crisis is, compared with others in Earth’s sometimes tumultuous history. Modern extinctions are documented, sometimes in real time. But the Big Five are measured using only the fossil record, a history of those species that were buried and preserved by sediments over time.
That’s why Roy Plotnick, a paleontologist at the University of Illinois, Chicago, and lead author of the study, thinks about far-flung scenarios involving future paleontologists. “We really need to look at modern day extinctions as if they were in the fossil record already, in order to make a comparison,” he says. So he and his colleagues searched fossil databases for modern mammal species—both those threatened by extinction and those that aren’t—to see how many modern extinctions would be detectable by relying only on fossils.
Explanation:
What would happen to CBB5 if the bacteria were heated up
Answer:When an enzyme is heated its shape, is disrupted and it becomes inactive. lol im 13
Explanation:
How many centiliters in 46.03 kiloliters?
Help me please
Answer:
4603000 cL
Explanation:
because i used a converter and please give me brainliest :D?
What does the term frameshift mean in science
Answer:
A frameshift mutation is a type of mutation involving the insertion or deletion of a nucleotide in which the number of deleted base pairs is not divisible by three.
Explanation:
Answer:
A frameshift mutation is a genetic mutation caused by a deletion or insertion in a DNA sequence that shifts the way the sequence is read. A DNA sequence is a chain of many smaller molecules called nucleotides.
HOPE IT WILL HELP U!
what is hypothesized to have caused the early primitive oceans to form our planet
Answer:
Explanation:
The primitive oceans formed from volcanoes at the beginning of time. When they blew up they released water vapour into the air. As the earth's crust cooled down, the water vapour condensed forming clouds, and water. The water fell as rain, which went down into the basins forming oceans. Scientists think they formed 4 billion years ago.
What was found in a French cave in 2013?
answer is Montignac........
What is a station model and what types of data are identified by a station model?
It has to be in your own words ill give brainliest
Answer:
Meteorologists created the station model to fit a number of weather elements into a small space on weather maps. This allows map users to analyze patterns in atmospheric pressure, temperature, wind speed and direction, cloud cover, precipitation, and other parameters.
Explanation:
hii, can somebody please answer this me? thank youuuuuu
Answer:
There are varying factors that affects the complexity increase of human population, some of them are particularly medicine and non stop development and modernization.
Natalia wants to surprise her daughter on her birthday so natalia orders her daughters favorite toy online workers wrap the toy and ship it to natales address, just in time for her daughter birthday. Identify the organelle that performs a simular function.
Answer:
This question is incomplete
Explanation:
This question is incomplete but the function described in the question is that of the golgi apparatus. The golgi apparatus is responsible for packaging and transporting of molecules (lipids and proteins) from the endoplasmic reticulum to there final destination in the cell.
Hence, the answer is golgi apparatus
How was the cane toad introduced in Australia
Answer: Option B)
Im 100% sure its the answer!
A chemical compound has
A. a fixed molecular formula
B. an unstable molecular formula
C. a single element
pls help correct the answer gets brainliest and
A different number of these ions
An ion is an atom that has different number of protons and electrons. An isotope is an atom of an element with a specific number of neutrons. Two different isotopes of the same element will have two different neutron counts.
Explanation:
Earth moon sun system model answers for edenuity
The Earth orbits the Sun while the Moon orbits the Earth. The Earth also rotates about its axis once every 24 hours making an Earth day 24 hours long. The Moon also rotates about its axis. However, due to gravity, the Moon's rotation is such that the same side of the Moon always points towards Earth.
Moon
☀️ . o
Sun Mercury Venus Earth
*the space between each planet is not accurate to real life cause they are millions and thousands away from each other*
Fill in the blank
Water is a ________ of the light dependent reaction
Answer:
Water is split during the light reaction to form oxygen
Explanation:
The hydrogen ions formed are super important for photosynthesis. They will be used to create ATP molecules. The ATP molecules will be used later on in the dark reaction (also called the Calvin cycle). The ATP molecules allow the plant cell to assemble carbon based molecules like glucose.
Explain the origin and importance of the buildup of free oxygen in the atmosphere for the evolution of animal life.
Answer:
Prior to the buildup of oxygen, organisms were mainly anaerobic and used mechanisms where no oxygen was present or needed. Once the buildup of oxygen starting occurring, organisms were forced to either evolve to survive or they would die off due to the presence of oxygen. The organisms needed to evolve so that they could use and benefit from the abundance of oxygen. The presence of oxygen is a huge evolutionary milestone that kick started the evolution of many new species. Organisms began to metabolize and perform all of its functions with oxygen present.
Explanation:
The origin and importance of the buildup of free oxygen in the atmosphere for the evolution of animal life as the Prior to the buildup of oxygen, organisms were mainly anaerobic and used mechanisms where no oxygen was present or needed.
What is the importance of oxygen?The importance of oxygen as once the buildup of oxygen starting occurring, organisms were forced to either evolve to survive or they would die off due to the presence of oxygen. The organisms needed to evolve so that they could use and benefit from the abundance of oxygen. The presence of oxygen is a huge evolutionary milestone that kick started the evolution of many new species. Organisms began to metabolize and perform all of its functions with oxygen present.
The origin and importance of the buildup of free oxygen in the atmosphere for the evolution of animal life as the Prior to the buildup of oxygen, he organisms needed to evolve so that they could use and benefit from the abundance of oxygen. The presence of oxygen is a huge evolutionary milestone that kick started the evolution of many new species.
Therefore, The origin and importance of the buildup of free oxygen in the atmosphere for the evolution of animal life as the Prior to the buildup of oxygen, organisms were mainly anaerobic and used mechanisms where no oxygen was present or needed.
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How does water use affect land ?
Answer:
All land uses have an effect on water quality, whether positive or negative. ... In built-up areas with pavement and buildings, little rainfall soaks into the soil, causing high runoff, stream flows with high peaks and low flows in between, and poorer water quality.
Explanation:
Hope this helped! Have an AMAZING day/night!!
Answer:
Surface-Water Contamination and Land Use A variety of natural and human factors can affect the quality and use of streams, lakes, and rivers, known as surface water. One of the most important factors that can affect the quality of a surface-water body is the land use within its watershed.
Explanation:
What evidence do you have that mitosis occurred in the roots?
Answer:
The evidence we found that mitosis was a continuous process was that many of the cells we observed in a small part of the onion root was that they were between stages meaning they never stopped and started, the process kept going.
Explanation:
is flour + water a colloid or solution?
Answer:
I belive it is a solution
Explanation: Hope this helped :D :3
Answer: ✅
Solution
Explanation: ✅
An example of a simple suspension would be flour in water, or sand in water. A colloid is a type of mixture intermediate between a homogeneous mixture (also called a solution) and a heterogeneous mixture with properties also intermediate between the two.
IamSugarBee
Someone help pls 1-10
Answer:
1) ecosystem. 2) community. 3) species. 4) competition. 5) ecology. 6) biotic factor. 7) resource. 8) abiotic. 9) habitat. 10) population.
Explanation:
I checked, these are 100% correct.
The farther a planet is located from the sun, the longer its day and year. How accurate is this statement?
Answer:
Very Accurate cause if a planet is farther from the Sun the slower and longer it takes to make a rotation around the Sun
Explanation:
What is the purpose of this article?
A) to inform
B) to inspire
C) to persuade
D) to entertain
Answer:
Wheres the article do you have an article?
Damage to the____would result in your feeling less fear.
A. pons
B. hippocampus
C. amygdala
D. hindbrain
Answer:
Amygdala
Explanation:
emotions
In which direction does the gas tail always point?
A. In front of the comet.
B. Away from the sun.
C. Back along the comet's path.
D. Toward the sun
Answer:
Option B i.e Away from the sun
Explaination:
Gas tails will always point away from the sun because of the radiation pressure of sunlight.
Which of the following is NOT evidence of plate tectonics?
1. distribution of fossils
2. location of earthquakes
3. rain forest depletion
4. the shape of the continents
Rain forest depletion is not evidence of plate tectonics.
• Plate tectonics is responsible for the distribution of fossils on distinct continents, for the continental and ocean floor features comprising volcanoes, mountains, trenches, and faults, for the occurrence of earthquakes, and the shape of the continents.
• On different continents, the fossils are identical to the fossils found on the continents, which were once connected.
• The majority of the oceanic and continental floor features are the outcome of the earthquake and geological activity along the plate boundaries.
• The depletion of rainforest is not a result of plate tectonics. The major reason for rainforest depletion are agriculture and fuelwood collection.
• Apart from this, some of the human activities like logging, mining, development of large dams and industry is also major cause of rainforest depletion.
Thus, rainforest depletion is not evidence of plate tectonics.
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Animal fats are solid at room temperature because they consist of
A) polyunsaturated fatty acids
B) Monounsaturated fatty acids
C)saturated fatty acids
Answer:
C) Saturated Fatty Acids
Explanation:
Because unsaturated fatty acids are liquid at room temperature.
When organisms break the bonds of organic compounds, the organisms can ____. A. use the smaller molecules to plug the gaps in the cell membrane to slow diffusion B. use the energy obtained to digest molecules produced by respiration that uses oxygen C. obtain energy or reassemble the resulting materials to form different compounds D. excrete smaller amounts of solid waste materials during vigorous exercise
Answer:
C. obtain energy or reassemble the resulting materials to form different compounds
Explanation:
Organisms can break down organic bonds (usually C-C bonds) to produce chemical energy, especially in the form of Adenosine triphosphate (ATP). In living cells, ATP is considered to be the 'cell's energy currency' because this molecule provides energy for diverse cellular processes. Moreover, small organic molecules generated by chemical breakdown can also be reutilized in metabolic pathways in order to synthesize new (more complex) macromolecules. For example, fatty acids generated by the breakdown of longer lipidic macromolecules can be reutilized in different metabolic pathways to produce structural building blocks of the cell.
The specialized structures of different types of cells are related to the cell's
1. function
2. equilibrium
3. energy
4.homeostasis
Answer:
function I think
Explanation:
I am in 7 grade it has been a minute so i thnk this is right it the only one that sounds right
The specialized structures of different variety of cells are related to the cell's function. Thus, option 1 is correct.
What are different cell functions?Every one of the life forms are comprised of cells. They structure the underlying premise of the relative multitude of life forms. The cell wall and the cell film are the principal parts that capability to offer help and design to the life form. For eg., the skin is comprised of an enormous number of cells.
During the time spent mitosis, the parent cell separates into the girl cells. In this way, the cells duplicate and work with the development in a creature.
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The main function of the rough endoplasmic reticulum is the production of Q
1. mitochondria and proteins secreted by the cell.
2. hydrogen peroxide and steroid hormones secreted by the cell.
3. ribosomes and steroid hormones.
4. membrane and proteins secreted by the cell.
Answer:
4. Membrane and proteins secreted by the cell
Explanation:
Endoplasmic reticulum (ER) is one of the organelle that makes up the endomembrane system of eukaryotes. The ER is of two types viz: rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER).
The RER is called "rough" because of the ribosome organelles that are attached to its surface. The attachment of this ribosomes (site of protein synthesis) also defines its function. The RER is principally involved in the production of protein. Hence, the Rough Endoplasmic Reticulum functions mainly in the production of membrane and proteins secreted by the cell.
The main function of the RER is the production of membrane and secretory proteins. Option D is correct.
Rough endoplasmic reticulum (RER) :
It is a membranous organelle that is a part endo-membrane system in the cell.
The ribosomes are attached to the RER, that make its appearance rough. Protein produced by the ribosomes is transferred to the RER lumen. Then it is modified and secreted.Therefore, the main function of the RER is the production of membrane and secretory proteins.
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When a gummy bear shrinks, is that considered hypertonic or hypotonic?
Answer:
Hypertonic
Explanation:
In hyper-tonic solutions, the cell will shrink and crenate. The mass and volume of a gummy bear that is placed in a salt solution will decrease due to the effect of osmosis. When placed in water, a hypo-tonic solution, the gummy bear will expand in size and volume due to the water entering it.
A mother sea turtle crawls onto shore and lays over one hundred eggs. The eggs hatch and more than half don’t survive what’s the explanation
natural selection is the best way to put this. you know. survival of the fittest.
the weak die and the stronger ones lives. but not necessarily all the time.
a lot of the time its all about luck and hope you dont get targeted or spotted
by predators. i mean yeah. that's about it.