6-C (breaks off)
7-C(they secrete acid that breaks away rocks)
Some of these can easily be eliminated by knowing that both nitrogen 14 and nitrogen 15 are isotopes ( same element, with the same amount of protons, but with different numbers of neutrons) of nitrogen. So if the only difference between nitrogen 14, 15 , and regular nitrogen is the amount of neutrons...how many protons and electrons should both nitrogen 14 and 15 have? After thinking, you should be able to eliminate A, B,and C.
The correct answer is silent mutation .
There are sequences present in the body where a point mutation occurs but the protein formed is still the same
I believe the correct answer from the choices listed above is option C. <span>If given an extremely long time, nonliving chemicals will still be nonliving. They will not gain some spirit as the days went by so they will always be nonliving. Hope this answers the question.</span>
Carbon dioxide plays an important role in carbon cycle. Carbon dioxide is used by plants in the process of photosynthesis to make food. The food is eaten by animals to gain energy and performs cellular respiration which releases carbon dioxide back to the atmosphere. This is the process of biological carbon cycle.
In geological carbon cycle, carbon dioxide enters the ocean by precipitation and combines with elements like calcium forming a compound and becomes the component of living organisms. Carbon compounds settles in the ocean when the organisms die.
