I think it's D. Sry if you get it wrong though
Answer:
The atmosphere is the largest reservoir of the nitrogen as it is composed of 78% of Nitrogen. Although 78%, this is not used by the organisms directly as the nitrogen molecule exists in nature in the form of divalent joined via triple bonds.
These triple bonds require a great amount of energy to be broken and used. Only a few prokaryotic organisms called nitrogen-fixing bacteria have the capability to break these triple bonds as they contain enzymes-nitrogenase complex which converts the atmospheric nitrogen to usable forms like ammonia, nitrates and nitrites. About 92% of the atmospheric nitrogen is fixed through this way rest through thunderstorms and Haber's process.
Thus, nitrogen-fixing bacteria is the answer.
The movement in phloem is bidirectional, whereas, in xylem cells, it is unidirectional (upward).
Answer:
<h2>Endangered: Still around but at risk of going extinct (example: tiger)</h2><h2>Extinct: Gone forever (example: wooly mammoth)</h2>
Explanation:
An endangered species is one with a reduced population. These species can easily become extinct if all the remaining members die.
<h2>I'm always happy to help :)</h2>
Answer:
Do you use the codon or Anticodon to find the amino acid?
String of amino acids make up protein's primary structure. anticodon – a sequence of three nucleotides on a tRNA molecule that bond to a complementary sequence on an mRNA molecule. The anticodon sequence determines the amino acid that the tRNA carries.
Explanation:
