Endocytosis and exocytosis are forms of active transport What is active transport? O the movement of molecules up a concentration gradient from low to high, using energy
O the movement of molecules down a concentration gradient from high to low, using energy
O the movement of molecules up a concentration gradient from low to high, using no energy
o the movement of molecules down a concentration gradient from high to low, using no energy​

Identify the missing parts of the carbon cycle

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.

Abnormal softening of a gland is known as