A. “The reactions can be summed up in this equation.” Other word(s)
for summed:

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

If a human has 23 pairs of chromosomes in every muscle cell of its body how many chromosomes will be in a human egg or sperm

Will give ! ! widentify the advantages and disadvantages of renewable and nonrenewable energy resources.