Blue-green algae plays an important part in the nitrogen cycle by recycling ammonia into nitrates and by "fixing" elemental nitrogen into a form that can be used by organisms. a decrease in this alga would have a large negative impact on the marine environment. however, not all algae play the same role in the environment. explain how a bloom (a drastic increase) of algae can cause problems in the marine environment.

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.

In sweet pea, gene c is responsible for color production and gene p is responsible for the purple color pigment. both of them are located on two different loci on different chromosomes. the flowers will be purple only when the plant has the genotypes as c_p_. no color will be produced with genotypes: ccpp, ccpp, ccpp, ccpp. thus, gene c controls the expression of gene p. what pattern of inheritance is exhibited here? a. pleiotropy b. epistasis c. multiple alleles

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone