Ahealthy environment depends on biogeochemical cycles maintaining a balance of input and output. high levels of nitrogenous compounds in the waterways can cause an algal bloom. how does an algal bloom affect a marine ecosystem?

a.) it decreases the carbon dioxide in the water, creating a toxic environment.
b.) it decreases oxygen in the water, creating a toxic environment.
c.) it increases the carbon dioxide in the water, stimulating plant growth.
d.) it increases the oxygen in the water, stimulating plankton growth.

Which of the following structures is not found in both plant and animal cells? a) chloroplast b) cytoskeleton c) ribosomes d) mitochondria

Competition occurs between species when

Considering the yellow and green pea color phenotypes studied by gregor mendel: a. what is the biochemical function of the protein that is specified by the gene responsible for the pea color phenotype? (1 point) b. a null allele of a gene is an allele that does not specify (or encode) any of the biochemical function that the gene normally provides (in other words, either no protein at all or only non-functional protein is produced from it). of the two alleles, y and y, which is more likely to be a null allele? (1 point) c. in terms of the underlying biochemistry, why is the y allele dominant to the y allele? (2 points) d. why are peas that are yy homozygotes green? (1 point) e. the amount of protein produced from a gene is roughly proportional to the number of functional copies of the gene carried by a cell or individual. what do the phenotypes of yy homozygotes, yy heterozygotes, and yy homozygotes tell us about the amount of sgr enzyme needed to produce a yellow color? explain your reasoning. (2 points)