This unit explains the diversity and evolution of living organisms and how these relate to survival in different environments.


A body part, body covering, or behavior that helps a plant or animal survive in its environment.


A color or shape in a plant or animal's body covering that helps it blend into its environment.


An adaptation in which an otherwise harmless plant or animal looks like a harmful plant or animal in order to protect itself.


Everything that surrounds and affects a living thing. The environment includes non-living things, such as water, air, soil, weather, landforms and other living things


The place where an animal lives. The physical characteristics of an animal's surroundings where it can find everything it needs to survive.


An animal that hunts and eats other animals for food.


An animal that is taken and eaten by another animal (predator) for food.


Using adaptations to continue to live.


Populations living and interacting with each other.

life cycle

The stages living things go through as they grow and develop.


Any living thing.


Includes all the organisms in an area and the environment in which they live.


All the organisms of one kind in an ecosystem.

behavioral adaptation

Something an animal does - or acts - in response to some type of external stimulus.

structural adaptation

Some type of structural or physical modification made to a part of the body.


Describes a species of plant or animal that once lived on Earth but which no longer exists.


An animal that eats both plants and other animals (meat).


An animal that eats only other animals (meat).


An animal that eats only plants.


An organism that is able to produce its own food (plants).

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