AP BIOLOGY

Detailed explanation-1: -Plants are also used by animals (and men) as material for building nests (and or homes). Carnivorous animals eat animals which are herbivorous, and without plants they wouldn’t survive, so the carnivors would quickly disappear.

Detailed explanation-2: -primary productivity, in ecology, the rate at which energy is converted to organic substances by photosynthetic producers (photoautotrophs), which obtain energy and nutrients by harnessing sunlight, and chemosynthetic producers (chemoautotrophs), which obtain chemical energy through oxidation.

Detailed explanation-3: -They are the source of food for animals. They provide shelter to animals like birds. They provide oxygen to the animals. They provide habitat to animals and helps them to escape from predators.

Detailed explanation-4: -Tropical forests have the highest biodiversity and primary productivity of any of the terrestrial biomes.