Ecosystems describe the interaction of non-living and living things in an environment.
Green plants are organisms that produce their own food through the process of photosynthesis. They get energy from the sun and combine water, carbon dioxide and green chlorophyll to produce glucose (sugar) in their leaves. They give off oxygen that animals need to breathe.
Animals are consumers in ecosystems. They can be herbivores, carnivores, or omnivores.
Decomposers like worms, mushrooms and bacteria break down dead organisms into nutrients that go back to the soil.
Each species (plants and animals) in an ecosystem has its own population number.
Food webs illustrate the connections between different food chains in an ecosystem.
A energy pyramid shows the way energy is reduced in each step of a food chain

BIOMES are huge areas that have the same climate.
Rain Forest (over 90 inches of rain a year. Can be tropical)
Grasslands (wet season and dry season)
Deciduous Forest (4 seasons)
Taiga (Northern climate with evergreen trees)
Tundra (Frozen permafrost, no trees)
ABIOTIC (NON-LIVING) factors in a climate of a biome are:
  • Temperature
  • Sunlight
  • Water in lakes or rivers, rain, snow
  • Soil, rocks, sand
PRODUCERS (plants) and CONSUMERS (animals) are biotic parts of a biome.