ENERGY IN THE ECOSYSTEMS

By Alex Gregory

Oxygen and CO2

• Animals and people breathe in oxygen and exhale, or let out, carbon dioxide.

• Plants take in carbon dioxide and exhale oxygen.

• This process repeats it’s self.

Herbivores

• Herbivores eat plants only.

• Herbivores have flat teeth.

• Herbivores are the 3rd in the food chain.

Omnivores

• Omnivores eat plants and meat

• Omnivores have flat and sharp teeth.

• Omnivores are consumers in the food chain.

• People are omnivores

Carnivores

• Carnivores are meat eaters.

• They have sharp teeth.

• They are consumers on the food chain.

• They are usually at near the end of the food chain.

Decomposers

• Decomposers include mushrooms, fungus, worms, and bacteria.

• They are at the end of the food chain.

• They decompose dead things to start the food chain over again.

Producers

• Producers are plants that get energy from the sun.

• Producers use water, sunlight, carbon dioxide to make sugar (or glucose).

• This is called photosynthesis. • Chlorophyll is the chemical that

makes plants green.

Consumers

• Consumers are herbivores, omnivores, and carnivores.

• Consumers get their energy from the things they eat.

• Consumers are all animals.

Food Webs

• In the food web there are predators, prey, and both.

• There are many organisms in a food web.

• If the population of the organisms in the food web increase or decrease the delicate balance could be hurt or destroyed.

Thanks for watching Alex’s Power Point!

• Hope you get a 100% on your science test! Make sure to study! Good luck!