A population continues at a stable size for many years. Suddenly, in a single season, the population size drops by half. Is the cause more likely to be density-dependent, density-independent, or both? Explain your answer.

Which of the following mutations would be most likely to improve the chances that an organism would survive and reproduce? F. a stronger scent that makes an animal easier to find G. a weaker scent that makes a flower less attractive to bees H.

To which taxa do all four organisms belong

Carlos is collecting data about the length of earthworms in his backyard. The shortest worm he found is 4 inches long; the longest worm is 8 inches long.

What are the advantages and disadvantages of high population density to a population

What happens when a population dies?

What continents lie mostly north of the equator

The classification system includes the domain Archaea. What characteristic would NOT be found in an organism in this domain? A. a cell wall B. a nucleus C. a set of genetic instructions D. a cell membrane

Example of the stimulus and responds in human

What might happen to cells that are exposed to high concentrations of sugar?

Why are the results of genetic crosses shown in punnett squares interpreted as probabilities, not certainties? give some specific reasons?