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Allisa [31]
3 years ago
6

What is natural selections role in evolution

Biology
1 answer:
Nezavi [6.7K]3 years ago
3 0

Explanation: The basic idea of biological evolution is that populations and species of organisms change over time. ... Darwin also suggested a mechanism for evolution: natural selection, in which heritable traits that help organisms survive and reproduce become more common in a population over time.

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He creationist and evolutionist are in agreement on all of the following items except:
adoni [48]
<span>the ability of matter to be self organizing</span>
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3 years ago
Botulism and myasthenia gravis are conditions that cause muscle weakness. Which of these statements is NOT true? Botulism and my
Vikentia [17]

Answer:

Both conditions are caused by an inability of the body to produce adequate acetylcholine.

Explanation:

Botulism is a potentially fatal condition caused by the toxin of bacteria <em>Clostridium botulinum</em>. Early symptoms are weakness, slurred speech, blurred vision etc. It may lead to vomiting, abdominal swelling and respiratory failure if not treated. The toxin hinders the release of neurotransmitter acetylcholine due to which motor neurons are not able to send signals to muscle cells. Muscles are not able to function properly due to which paralysis occurs.

Myasthenia gravis is also a neuromuscular condition like botulism. But unlike botulism release of acetylcholine is not hindered here. The receptors for acetylcholine are destroyed or altered by body's own immune system. Acetylcholine despite being present is not able to relay the signal which leads to muscle weakness. Symptoms are almost similar to those of botulism.

4 0
3 years ago
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What do you think can be learned from samples of sediment from the ocean floor?
AlexFokin [52]
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Note Enter your answer and show all the steps that you use to solve this problem in the space provide
netineya [11]

Answer:E is as far from C as it is from D. So,CE = E-C = (-1-5,0-2) = (-6,-2)So, add that much to E and you getD = E+(E-C) = (-1,0)+(-6,-2) = (-7,-2)

Explanation:

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2 years ago
What is the need for cellular specialisation in a multi-cellular organism?
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Cellular<span> differentiation is the process by which a less specialized </span>cell<span> becomes a more specialized </span>cell<span> type. Differentiation occurs numerous times during the development of a </span>multicellular organism<span> as the </span>organism<span> changes from a simple zygote to a complex system of tissues and </span>cell<span> types.

(Hope this helps)</span>
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3 years ago
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