when an animal's natural living environment is destroyed or altered, making it difficult for them to survive

The burning of some fuels creates carbon dioxide, carbon monoxide, sulphur dioxide, methane and other gases which rise into the atmosphere. What do you call these gases?

natural substances such as coal, oil, and gas that are burned to produce energy

Modern zoos aim to allow animals to express their ________, even in enclosed environments.

to put equipment or machinery in place and make it ready to use

Many companies are developing boxes, cartoons, and cans which can be easily decomposed by organisms such as bacteria, or by sunlight, sea, water, etc. What do you call this type of material?

The heating up of the earth's atmosphere by pollution is threatening life as we know it. what do we call this phenomenon?

devices used to store energy generated by solar panels

large fires that burn out of control in forests or other green areas

the amount of greenhouse gases produced by human activities, measured in units of carbon dioxide

Protecting the tiger is a key goal for many organisations working to save ________.

"Don't drink that water! It's been made dirty by something being added to it!" Another way to say this is that the water is ______.

Proper ________ ensures that hunting, fishing, and land use are balanced with the needs of nature.