Photosynthetic protists include phytoplankton, red algae, and brown algae. What is the key role of these protists in aquatic environments?

A. They form the base of the aquatic food web.
B. They help larger organisms digest food.
C. They remove excess sodium from water.
D. They consume cyanobacteria.

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

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