Protection of plants and animals, natural areas, and interesting and important structures and buildings, especially from the damaging effects of human activity (noun)

How do you say "multiplied by"? (example: 9x3)

To put electricity into an electrical device such as a battery (verb)

Food that has had some sort of chemical or industrial treatment in order to cook it, preserve it, or improve its taste of appearance is... (adj)

Meaning of "in practice"

Having a lot of mountains (adj)

Form of energy that can be produced as quickly as it is used (adj)

To walk around a shop looking at several things; to look at information on the internet (verb)

A substance in a form like air that is neither solid nor liquid

Type of computer that is small enough to fit on the top of a desk

New information / new version of an application

One of several gases, especially carbon dioxide, that prevent heat escaping into space, causing the greenhouse effect

A substance that has been made pure by removing other substances from it is... (adj)