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navik [9.2K]
2 years ago
8

How would the fossil record look different after the Cambrian Explosion vs. after a mass extinction?

Biology
1 answer:
Aliun [14]2 years ago
3 0
The beginning of the Cambrian Period is marked by the evolution of hard body parts such as calcium carbonate shells. ... These body parts fossilize more easily than soft tissues, and thus the fossil record becomes much more complete after their appearance.
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Hi i need help thank you
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Organisms that use the same resources because there may not be enough for all, so it then becomes a competition of who gets it and who doesn't.
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Which system is responsible for protection as well as support of the body's weight?
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The answer is D) skeletal system 

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3 years ago
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A bacterium that you isolated from pond water appears to use light for energy. Based upon this information, you inoculate the or
Dima020 [189]

Answer:

There was no sulfur compound added to the medium, that could be used as an electron donor.

Explanation:

Bacteria that use light for energy requirements mean that they get their energy from photosynthesis and transferring energy through the molecules.

Bacteria play a major part in the reductive and oxidative cycle of the sulfur which is mediated by the help of photosynthetic bacteria, so the sulfur or sulfur compounds are major requirements for their growth in the habitat or the medium.

Thus, the correct answer would be- There was no sulfur compound added to the medium, that could be used as an electron donor.

3 0
2 years ago
1. The ribosomes of which of these pairs of organisms would be expected to be most similar?
chubhunter [2.5K]

In this case, the ribosomes organelles of Satyrinae and Charazinae are expected to be most similar.

<h3>What is evolution?</h3>

Evolution refers to the descendence with modification and therefore differences are lesser in close species.

According to the tree, the statement 'Nymphalidae share a common ancestor with other butterflies' best supports the theory of evolution.

In conclusion, in this case, the ribosomes organelles of Satyrinae and Charazinae are expected to be most similar.

Learn more about evolution here:

brainly.com/question/4207376

#SPJ1

8 0
2 years ago
How to tell a Cancer cell from a Non-Cancer cell?
pav-90 [236]

Answer:

Cancer cells ignore these cells and invade nearby tissues. Benign (non-cancerous) tumors have a fibrous capsule. They may push up against nearby tissues but they do not invade/intermingle with other tissues. Cancer cells, in contrast, don't respect boundaries and invade tissues.

Cancer cells differ from normal cells in many ways that allow them to grow out of control and become invasive. One important difference is that cancer cells are less specialized than normal cells. That is, whereas normal cells mature into very distinct cell types with specific functions, cancer cells do not

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