Why do plants and animals live in different places and what happens when those places change?

Lesson 1Animal Adaptations

Lesson 2Plants and Their Surroundings

Lesson 3Changes in Ecosystems

adaptation

hibernate

camouflage

mimicry

What are adaptations?

A camel’s hump stores fat for times when food is scarce.

What are some other adaptations of animals?

The dormouse hibernates in its nest.

The snow leopard blends into its environment to help it survive.

These reef fish eat the algae that grow on the shells of sea turtles.

How else do animals survive?

How do adaptations help animals survive in their environments?

Main Idea

Adaptations can help an animal to find food.

They can help animals to hide from predators.

They can help animals to hunt for prey.

They can allow animals to move in certain environments.

An adaptation in which one living thing looks similar to another living thing is called _________.

A trait or behavior that helps a living thing survive in its environment is an ___________.

To survive cold winters, some animals _________.

An animal that blends in with its surroundings uses ___________.

adaptation camouflage

Vocabulary

hibernate mimicry

Predict

Suppose someone moved a polar bear to a rain forest. Predict how the bear might survive there.

The bear would shed most of its fur and fat because the rain forest is very warm.

It would take a very long time for a polar bear to adapt to this environment.

The polar bear would not survive.

End of Lesson

stimulus

tropism

How do plants respond to their environment?

Tropism is the reaction of a plant to something in its

environment.

Tropism experiment

What are some plant adaptations?

A cactus has soft tissue that holds water just like a sponge. It also has a thick waxy cover to keep the water inside.

How do plants respond to their environments? Give at least three examples.

Main Idea

Plants can grow toward or away from a stimulus, such as light, water, or gravity.

A _________ is something in the environment that causes a living thing to react.

_________ is the reaction of a plant to something in its environment.

stimulus

Vocabulary

tropism

Tropism

Problem and Solution

End of Lesson

How could you show that

plants respond to changing

temperatures?

Grow plants in different temperatures, with all other conditions being equal.

Observe the plants to determine how different temperatures affect growth.

Record your data and place plants in temperatures where they grow best.

accommodationendangeredextinct

Mount Saint Helens in 1995

What causes an ecosystem to change?

Mount Saint Helens in 1980

a subway car being sunk

an airplane being sunkconcrete “reef balls”

on the sand

How do people change ecosystems?

Manufactured Ecosystems

The passenger pigeon was hunted into extinction in

1914.

What happens when ecosystems change?

The Tasmanian tiger was declared extinct in 1936.

How can people prevent extinction?

The giant panda is an endangered species.

List six events that change ecosystems. Choose four natural events and four caused by people.

Main Idea

Natural events: storms, earthquakes, droughts, volcanic eruptions

Changes caused by people: farming, mining, land development, pollution

When a species no longer exists, it is __________________.

An individual’s response to change is called an __________________.

If a living thing has few of its kind left it is __________________.

accommodation endangered

Vocabulary

extinct

What happens when a forest is cut down to build a power plant?

A forest is cut down to build a

power plant.

Cause and Effect

End of Lesson

Organisms that live in the forest must move

to a new ecosystem, accommodate the power plant, or become extinct.