Reading 2.1 – What Caused These Population Changes?

Front

What is a mammal?

Back

A mammal is a warm-blooded animal that has hair or fur and usually gives birth to live young. They also produce milk to feed their young.

Front

Which of these is a mammal?

Back

Dolphin

Front

What do red-legged frogs lay in shallow water?

Back

Eggs

Front

What is the habitat edge where trees can grow called?

Back

Tree line or timberline.

Front

What is the primary characteristic of amphibians?

Back

Amphibians are cold-blooded animals that can live both in water and on land, and they usually undergo metamorphosis.

Front

What is the difference between a reptile and a mammal?

Back

Reptiles are cold-blooded, have scales, and lay eggs, while mammals are warm-blooded, have fur or hair, and usually give live birth.

Front

What is a habitat?

Back

A habitat is the natural environment where an organism lives, including all living and non-living factors.

Front

What is biodiversity?

Back

Biodiversity refers to the variety of life in a particular habitat or ecosystem.

Front

What is an ecosystem?

Back

An ecosystem is a community of living organisms and their interactions with their environment.

Front

What is the role of producers in an ecosystem?

Back

Producers, like plants, create their own food through photosynthesis and provide energy for other organisms.