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Svetlanka [38]
3 years ago
8

Proposed a theory to explain the origin of life on earth

Biology
1 answer:
4vir4ik [10]3 years ago
5 0
The big bang, evolution, etc.etc. i don't fully understand the question.
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The least specific level of classification is:<br> A.Phylum<br> B.Domain<br> C.Order<br> D.Genus
galben [10]

Answer:

species

Explanation:

use this acronym king pharaoh can order for general scientists. king for kingdom, pharaoh for phylum,can for class,order for order, general for genus and scientists for species

5 0
2 years ago
Read 2 more answers
Why are carbon dioxide concentrations expected to increase?
garri49 [273]

Answer:

The correct answer is d all of the above

Explanation:

There are many reasons behind increasing the concentration of atmospheric carbon dioxide such as

1 Burning of fossil fuels such as coal,petroleum increases the level of atmospheric carbon dioxide.

2 Increase in Argiculture also increases the level of green house gases such as CO2.

3 Clearing of lands for increasing population and agriculture by cutting down trees also adversely effect the normal 02:CO2 ratio in the atmosphere.

6 0
3 years ago
Although ____ kills mosquitoes, it is harmful to the reproduction of many predatory birds.
liberstina [14]
I believe the correct answer is DDT.
It kills mosquitoes but thins the eggs of birds.
Hope this helps.
4 0
3 years ago
Read 2 more answers
Mitosis is a process used for normal growth and development. Explain how and why a mutation in a BRCA gene may affect the cell c
Romashka [77]

Answer:

The BRCA gene is a tumor-suppressor gene found in the breast; to be more specific, it produces proteins that suppress cancerous activities/abnormal growth in the body. A mutation in a BRCA gene would allow these abnormal growth activities to go unchecked and thus increase the rate of mitosis. Cell cycle checkpoints would significantly be worse at their jobs of checking and correcting for errors during the cell cycle. Tumors would result as well, as cancerous growth continues, and the tumor can become metastatic.

7 0
3 years ago
If there are no differences between the amino acid sequences in the cytochrome c protein of humans and chimpanzees, why aren't w
JulsSmile [24]
<span>The two factors that determine the shape of a protein </span><span><span>
1. </span> Primary structure. The sequence of amino acids. Amino acids are the building blocks of protein. It is a strong of linearity that can be thousands in length. Moreover, the formation of the amino acid and its system is influenced by its genes’ nucleotides arrangement.  </span> 
<span><span>2. </span>Hence the next factor is how is the structure of the amino acids bended and folded with itself that forms the certain protein molecule and forms the larger complex structure</span><span>
</span>
4 0
2 years ago
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