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elixir [45]
2 years ago
13

How does the proportion of hydrogen and helium in the universe support the Big Bang theory?

Biology
1 answer:
lara [203]2 years ago
4 0

Answer:The answer is A

Explanation:I have had the question before

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The circulatory system of a whale is considered an organ system because it is composed of different A. cells. B. tissues. C. org
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Answer:organs

Explanation:the body of multicellular organisms are organised into levels of organization.these levels increases in complexity.

The macromolecules makes up the organelles . organelles in turn makes up the cell.A group of similar cells at a certain location makes up an organ.for example the heart consists of a number of cells.

A group of organs which work together to achieve a specific function in the body , makes up the organs system.

For example the circulatory system of a while is made up of different connected organs - heart, blood vessels,to perform the function of transporting blood around it's body.this makes it an organ system.

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3 years ago
Are humans influencing global climate change?
Paul [167]
<span>Evidence that human activities influence the global climate system continues to accumulate. Data indicate that Earth's surface temperature is rising. This increase can be attributed, in part, to human-caused increases in greenhouse gases such as carbon dioxide. It is becoming apparent that these climatic changes are negatively affecting physical and biological systems worldwide.</span>
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3 years ago
If an atom contains 5 protons, 4 neutrons, and 3 electrons. its atomic mass is​
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Add the protons and neutrons to find atomic mass 5+4=9. the atomic mass is 9
4 0
2 years ago
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In an asexual species, a beneficial allele and a deleterious allele are in linkage disequilibrium. The selection pressure for th
Stella [2.4K]

Answer:

selective interference

 

Explanation:

Natural selection acts on genes that are inherited together, which is the case for species of asexual reproduction (where genes are inherited together by clonal offspring).  In asexual species, linkage disequilibrium (i.e., non-random association of the alleles of different <em>loci</em>), can be understood in a similar mode in terms of population allele frequencies. Selective interference underlies the association between beneficial mutations and surrounding sites which are subject to deleterious mutations. It has been shown that asexual species adapt at a slower rate than species of sexual reproduction. In sexual species, selective interference could be bypassed through the mechanism of recombination during meiosis (although there is not conclusive evidence of this). In asexual species, different deleterious and beneficial mutations are generally fixed, whereas beneficial mutations are generally spread and fixed in species of sexual reproduction.

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