Food Chains & Food Webs

What is a Food Chain? A food chain shows how different organisms in an ecosystem depend on each other for food. It is a single path of energy flow in an ecosystem. Producers: The food chain starts with producers that make their own food. Plants and algae produce their...

Birds: Concept of Flight

How Do Birds Fly? Birds have special adaptations that help them fly. Wings: Birds’ wings are shaped like an airfoil, bigger up front and taper towards the back.  Air flows over and under a bird’s wings. The air on top pushes less on the wing than the air on the...

Diverse Life in Rainforests

What is a Rainforest?  Rainforests are lush, green forests in tropical regions near the Equator. They receive plenty of rainfall year-round.  More than half of the world’s plant and animal species live in the rainforests. Rainforests consist of 4 layers:  Emergent...

Animals that Lay Eggs vs Live Birth

Animals that Lay Eggs Animals that lay eggs are called “Oviparous.” The embryo develops inside the egg. Birds: All birds are oviparous, laying eggs with hard shells. The parents usually incubate the eggs until they hatch. Reptiles: Most reptiles, including snakes,...

How do Fish Breathe?

How do fish breathe? Fish breathe with the help of gills, specialized organs to take in oxygen from water.  Step 1: Fish open their mouth and take in water Step 2: The water flows over the gills on either side of its face. Step 3: The gills have thin filaments called...
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