While snorkeling in the ocean you find large, leafy organisms that are brownish in color growing in large masses. you are unsure whether they are protists since they look quite plant-like. if they are actually protists, what characteristic will the organism’s cells exhibit?
a. each of the cells in the organism will have its own nucleus.
b. the cells will form a colony with separate groups of cells doing various jobs.
c. the cells will form a colony without differentiating into separate tissues.
d. most of the cells in the organism will have cilia or flagella.

How are the cell walls of a plant and fungus different ?

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?