Answer:Carbon is the basic building block to most cells in the body. It helps with cellular respiration by which your body releases energy stored in glucose and the glucose compound is composed of carbon, hydrogen, and oxygen.
In ecology, allogenic succession is mediated by the abiotic components of the ecosystem, while the autogenic succession refers to the succession, which is mediated by the biotic components of an ecosystem.
A volcanic eruption wiping out an entire island is an example of allogenic succession.
A soybean crop helping in nitrogen fixation, leading to the development of other species is an illustration of autogenic succession.
A tsunami devastating all the living organism in a habitat is an example of allogenic succession.
Oak trees preventing the growth of smaller sun-seeking shrubs is an example of autogenic succession.
Filter feeders. over harvesting is occurring in the bay disease and habitat loss.
The answer would be b. Crossing over simply creates a higher amount of genetic variation within the daughter cell which is advantageous to sexually reproducing organisms.