Answer:
Firstly, the partial pressure of nitrogen (78%) is crucial to breathing purposes. Without this pressure, the lungs will burst and animals cannot survive.
Secondly, nitrogen is required for the formation of amino acids (building blocks of proteins) and other organic compounds that are necessary for the survival of living organisms. Principally, in the atmosphere, nitrogen is present in the form of molecular nitrogen (N2). N2 is fixed by nitrogen-fixing bacteria that form nitrates and nitrites. These molecules are then used in biochemical processes to produce proteins (amino acids) and other organic compounds. In the absence of nitrogen, these processes could become seize of limited significantly thus affecting life overall.
Thirdly, nitrogen and its derivatives act as greenhouse gases that maintain the Earth's temperature within a range that supports life. Yes, the increased abundance of nitrous oxides is not good because of acid rain and other issues, however, still, the presence of nitrogen is important for life on this planet.
Answer:
Type B stars
Explanation:
type B stars are the hottest, so they would burn up more quickly, spending the least amount of time on the main sequence.
Answer: uracil is found in RNA nucleotides, but NOT in DNA, i hope that helps
Explanation:
Question 13) Electrons
Question 14) Ionic bonding
Question 15) The number of protons and neutrons
Question 16) Nuclear weapons can release much more energy than chemical reactions.
Question 17) An unstable ratio of protons and neutrons
Question 18) A homgenous solution
Question 19) An element
Question 20) Freezing
Question 21) The number of protons in an atom.
Question 22) have a full outer shell of electrons.
Question 23) Non-metals
Answer:
There is no video link, so I cannot answer your question
