The allee effect a. is caused by variation in k, carrying capacity. b. occurs when the population growth rate declines at low population density. c. protects species from extinction. d. none of the above.

Are the earth's ocean floor and continents the same age geologically? why or why not?

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. chinchilla x chinchilla 1/2 agouti, 1/2 chinchilla 3/4 agouti, 1/4 chinchilla all chinchilla

Easy 6th grade work! 100 points! i need fast! compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.