The diffusion of water across a selectively permeable membrane is called a osmotic pressure. b facilitated diffusion. c osmosis. d active transport.

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins

State officials are considering constructing a road through a forested wilderness area. this action will likely affect the forest ecosystem in various ways. part a: predict how the construction of a road could negatively affect plants and animals in that ecosystem. (3 points) part b: describe one way that the construction of a road could have a positive impact of the forest ecosystem. (1 point)

Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16