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omeli [17]
3 years ago
15

Help me with this and u will get 18 points:) tysm if u do

Biology
2 answers:
ivolga24 [154]3 years ago
6 0

Answer:

the answer is a.

Explanation:

I just know

Ede4ka [16]3 years ago
3 0

Answer:

B

Explanation:

Tell me if wrong

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Which of the following is not one of the advantages that a closed circulatory system has over an open circulatory system? A. The
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Answer:

The correct answer is option A. "The contents of blood come into closer contact with tissues in a closed system than an open system".

Explanation:

In a closed circulatory system, the blood has an specific path, circulating from arteries to veins and to smaller blood vessels throughout the body. This is in contrast with open circulatory systems at which the blood is not contained in arteries or veins but it suffuses the body. A closed circulatory system have many advantages over open circulatory system, however in a closed circulatory system the contents of blood are not into closer contact with tissues in than an open system. Actually, in an open circulatory system the blood is in closer contact with tissues.

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3 years ago
Sexual reproduction increases the genetic variation of a species because
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The answer is C. Alleles form your genetic makup :)

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Changes that may take place in climates may be due to
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Answer:

Explanation:

The cause of current climate change is largely human activity, like burning fossil fuels, like natural gas, oil, and coal. Burning these materials releases what are called greenhouse gases into Earth's atmosphere.

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3 years ago
There are three major, distinct groups of organisms: bacteria, archaea, and eukaryotes. However, until recently bacteria and arc
Sveta_85 [38]

Answer:

Comparative genomics of the three groups

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Bacteria and archaea (formerly called archaebacteria)  were considered much more closely related, but DNA sequence analysis showed numerous differences between the two groups, and further proved that archaea was closely related to eukarya than bacteria.

However, in 1970, Dr. Carl Woese and other scientists in a bid to determine the distinction between the three groups made use of the nucletide sequence of the ribosomal RNA as an evolutionary time clock.

It is widely known that the rRNA sequences; is present in all organisms, functions differently in various organisms, is involved in protein synthesis, can be align between two organisms and can change gradually over a long period, hence this made it a good tool to determine evolutionary distinctiveness.

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Hope this helps (:

-Payshence xoxo
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