The vast

grasslands were dotted with a _____ of grazing buffalo.

The decline

in air quality in the city can be put _____ a combination of increased

industrial emissions and a rise in vehicular traffic.

The natural ____

of the red fox includes a diverse range of environments, from forests and

grasslands to urban areas.

Which can

cause extremely serious health or environmental problems?

The

introduction into the environment of a substance which has harmful or poisonous

effects is _____.

_____

describes the practice of taking actions to protect the natural environment as

a whole from damage caused by human activities, protection of natural

resources?

It

is now wildly accepted that pollution _____ humans, the environment, and

buildings.

We have to

educate our people on the importance of purchasing ________-friendly vehicles.

The

industrial revolution marked a significant shift as societies increasingly

relied on _____such as coal and later, oil, to power machinery and fuel

economic growth.

The

conservationists work tirelessly to protect species