Active transport move particles in and out of the cell a. against the concentration gradient b. with the concentration gradient c. only at concentration equilibrium d. at any time, concentration doesn’t affect active transport

What type of competition exsist between two species. turtles and fish

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land