Describe how fossils help us understand the past. Provide an example.

Answers

Answer 1

Answer: Study of fossils has led to important new understanding about how life evolved on earth and about diseases, both ancient and modern. Fossils also help us understand past climates, including ice ages and periods that were warmer than our present climate. Knowledge from the study of fossils is helping geoscientists understand global warming and its effects. By studying the catastrophic extinction of the dinosaurs and many other life forms at the end of the Cretaceous Period, geoscientists have gained insight into the evolutionary implications of impacts by extraterrestrial objects. Investigating the physical and chemical characteristics of fossil organisms that lived during times of drastic climatic change helps us understand the implications of the changes we are making in our own environment. Information about Earth history, practical help in finding energy resources, and information that helps us anticipate the effects of possible environmental changes are not the only benefits derived from fossils. hope this helps :)

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Which individuals in the pedigree are identified and labeled carriers for red-green color blindness?

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Do you have the pedigree to share? Red green color blindness is an x linked trait, which means that it is found on the X chromosome. X linked traits are often recessive, and this is why they usually show up in males, such as the case of red green colorblindness. A male has only one copy of the X chromosome, so if a recessive x linked trait is present, he does not have the option of the dominant version of the trait to show up. A recessive X linked trait can present itself in a female, but since she has two X chromosomes, she would need to have two copies of the recessive trait for it to present itself. This is why color blindness is less common, but still possible in females. I hope this helps you with your pedigree.

The best given answer for the following question would be B) Sam, Tim, Bella, and Joshua

What are the three rules that govern the filling of atomic orbitals by electrons

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Rule 1. aufbau rule - energy levels filled so lowest energy level filled first.
Rule 2. pauli exclusion principle - maximum of 2 electrons may be placed in each energy level. Provided the spins of electrons are of opposite sign.
Rule 3. hunds rule - when energy levels are equal one electron is added to each energy level in turn with their spins unpaired until each energy level has one electron.

Prokaryotes reproduce asexually through the process of Eukaryotic cells reproduce asexually through the process of

Answers

The correct answers are;

1. Binary fission.

2. Mitosis.

Prokaryotes reproduce asexually through binary fission process while eukaryotes reproduce asexually through the process of mitosis.

Prokaryotes they lack cell nucleus while eukaryotes are made of cells which possess membranes which bounds nucleus and they hold genetic material.

Examples, of prokaryote includes single-celled organisms for example, bacteria and escherichia.

Prokaryotes reproduce asexually through the process of binary fission, whereas Eukaryotic cells reproduce asexually through the process of mitosis. So here, the correct answer is option A.

Binary fission is a simple and rapid method of reproduction in prokaryotic organisms, such as bacteria and archaea. During binary fission, the parent cell duplicates its genetic material and divides into two identical daughter cells. Eukaryotic cells, on the other hand, can reproduce asexually through various mechanisms, such as mitosis, etc. So here, the correct answer is option A.

Learn more about the reproduction methods of different organism here.

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A.binary fission, mitosis

B.mitosis, mitosis

Glucose provides energy for cells. Different cells have different mechanisms for glucose intake. Intestinal cells contain proteins that transport glucose against its concentration gradient. These proteins couple the movement of glucose to the movement of sodium down its concentration gradient. Red blood cells have transporter proteins embedded in their membranes. When bound by a glucose molecule, these proteins change shape and allow glucose to move down its concentration gradient into the cell. Based on this information, what type of transport is used for glucose in blood and intestinal cells?

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The answer is; active transport in small intestines and passive transport in blood cells

In passive transport, no energy is required to transport the glucose molecules because they spon6tanosuely move down their concenntrati0n gradient. The transport protein in the blood cell membrane only enables the molecule to pass across the hydrophobic layer of lipid in the membrane and into the cell.

In active transport, energy is required in the transportation of glucose against their concentration gradient (glucose is highly concentrated in the lumen of the intestines than in the bloodstream). Sodium/Potassium (Na+/K+) pumps play a significant role in the transport of glucose. When sodium diffuses back into the cells, they drag along glucose molecules with them across the sodium-glucose transporter protein.

Answer: active transport in small intestines and passive transport in blood cells

Explanation: It is a Passive Form Of Transport In Blood

What will happen to a population of predators if there is a sudden increased in food for the prey

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At first, the population of predators would spike and increase quickly, but then over time, gradually decrease.

(This is because at first there's more food, so the predators population increases. But overtime it begins to level out and the predators' population catches up with the prey, and in result, doesn't continue increasing.)

A sudden increase in food would result in prey eating and breeding which would mean more the predators could do the same. The predator population would increase with the population of its prey.

Class O stars are the: hottest coolest brightest dimmest

Answers

The hottest is the answer

Class O stars is the hottest type of star

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Consider a recessive mutation that results in a complete loss of gene function. If heterozygous individuals (mutant/wild-type) are phenotypically wild-type, then the wild-type allele would be described as being __________. See Section 4.1 (Page 107) .

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What do you think happens within lizard populations (i.e., among individuals of the same species who coexist in space and time) when the food supply is limited?