3.2 Energy, Producers, & Consumers

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Presentation transcript:

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.

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.

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

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)

-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)