The density of a population is the

a. number of individuals in a defined area.
b. amount of food available for each individual.
c. average mass of the individuals in the population.
d. rate of photosynthesis carried on by the producers in the population.

Aplant may open end close its stomata to prevent excess water loss and maintain

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid

Physical characteristics of down syndrome