Diffusion of water across a membrane from areas of higher concentration to areas of lower concentration is called a. osmosis b. passive diffusion c. facilitated diffusion d. cellular respiration

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red.b) the pollen grains will be pure blue.c) the pollen grains will have red interiors and blue exteriors.d) the pollen grains will have blue interiors and red exteriors.

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment