1. 3.2 Energy, Producers, & Consumers
-Organisms need energy for growth,
reproduction, & metabolic
processes.
-No organism can create energy,
they can only use it from other
sources.

2. Primary Producers
-sunlight is the ultimate source of energy.
-autotrophs (AKA primary producers)-
plants, algae, & certain bacteria get
energy from sunlight or chemicals and
convert them into forms that living cells
can use.

3. ~They get solar energy through photosynthesis
(this adds oxygen to the atmosphere and removes carbon dioxide.)
Carbon dioxide + water + light energy --> carbohydrates + oxygen

4. Consumers
-hetertrophs (AKA consumers)-organisms
that must get energy from other
organisms by ingesting them.
-carnivores-kill & eat other animals
(snakes)
-scavengers-animals that consumer the
carcasses of other animals (vulture)

5. -decomposers-feed by chemically breaking down organic matter
-decomposers-feed by chemically breaking down organic matter. (mushroom)
-herbivores-eat plant leaves, roots, seeds, or fruits (cows)
-omnivores-eat plants and animals (humans)
-detritivores-eats plants & animal remains (earthworm)