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Sati [7]
3 years ago
9

Earth's atmosphere is unique among the planets because it contains a large amount of ___________. A) oxygen B) helium C) methane

D) carbon dioxide
Biology
2 answers:
a_sh-v [17]3 years ago
4 0
The answer is A. Oxygen
MrRissso [65]3 years ago
3 0

The answer is A i had it on a test.

Explanation:

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Suppose there are 500 units of energy available at the producer level of the energy pyramid. Approximately how many units of ene
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With every other lever 10% of the energy with be transferred. In this case:

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1) First- level consumer. (50)
2) Second-level consumer. (5)
3) Third- level consumer. (0.5)
Remember the formula is:
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What is one bioethical concern with using embryonic stem cells for regenerative medicine?
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Define dark reaction ?​
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2 years ago
How do trees act as carbon sinks?
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The best answer is D.

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Due to the effectiveness of trees and other plants as carbon sinks,  the Kyoto protocol proposed that emission reduction can be achieved through absorption of carbon dioxide by these plants. 



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Use the double-stranded DNA molecule below to answer the following questions. The first pair of nucleotides (bolded) contains th
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Answer:

The correct answer is 2. 5'-AUGUCAGGUACGCCACAU-3'

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In RNA, A(adenine) makes complementary base pairing with U(uracil), not with T(thymine) and the rest of the base-pairing is same as in DNA. Therefore the correct mRNA produced from the transcription of this DNA molecule by the help of RNA polymerase is 5'-AUGUCAGGUACGCCACAU-3'.

Then this mRNA sequence will be used by ribosomes to synthesize proteins during the translation process.

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3 years ago
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