Keystone A unit 4 reading 2

We went to the library _______ we could have a quite place to do homework.

Things that influence or cause a situation.

Birds and mice have to be careful. There are many _____ that want to eat them, such as cats.

A collection of numbers that represents facts or measurements

Environmental __________ have a goal of protecting and conserving wildlife and nature.

The university’s department of ______ is dedicated to the advancement of knowledge about birds.

The dodo and the passenger pigeon were both hunted for ____.

Many animals have gone extinct _______ human activity.

The dodo was a _____ bird.

A bird’s natural ______ is not in a zoo, but in the trees and other wild places.

Conservationists are _______ trees to help the woodpeckers.

The land, water and air that surrounds people, animals and plants.

Raheem and Will are in trouble, ___ they are in the principal's office.

Many animals, including birds, are killed because people feel they are _______.

Destruction of animal habitats can contribute to the animals’ __________.

Many birds have become extinct because of ____.

Bird experts were convinced that the ivory-billed woodpecker was not extinct because of ____.

The Carolina parakeet was native to _____.

To judge the value or size of something

_________ of animal habitats can contribute to the animals’ becoming extinct.