The cellular structures that are the machines that essentially build proteins needed for the cell to grown and survive, would be the ribosomes, these small granule like organelles are found throughout the cell, whether they be freely floating in the cytoplasm of the cell or attached to the endoplasmic reticulum. They are the site for where the tRNA's complementary base pair their anticodons to the codons present on the mRNA strand.
DNA mutations that actually originate in the gametes is mainly responsible for genetic biodiversity existing in modern organisms. The term biodiversity actually refers to the variety as well as variability of life that is found on the planet earth. his variety can be seen between species, the ecosystem and within the species.<span />
Not sure if we have to use the example of a beaver, but if wolves are increasingly being killed by people in an area, it would cause their population to decrease, and the population of animals wolves prey on, such as deer, would increase, disturbing the natural balance of the ecosystem. There would be an overpopulation of deer.
Because it requires air, or oxygen to complete. Aerobic means with air. Therefor, cellular respiration is an aerobic process. I hope this helps, if you have a question, feel free to ask !