Describe in a short paragraph how the following terms work together in an ecosystem and which of the terms can be used to include all of the rest of the terms. Trophic level, Food web, Food chain, Consumer, Producer.

i believe that the answer is c.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

a covalent bond, specfically triple bond