I never leave any electrical appliances on standby and I think it is a good way to ____ energy in the home.                                                        

Nowadays, people are searching for more ____ materials to build their houses.

In the ____ agriculture, farmers try to limit the use of chemicals and fertilizers.

In Singapore, people try to ____ 80% of all waste.

Choose the word(s) CLOSEST in meaning to the underlined word(s) in the following question.

For environmental safety, we need to find ways to reduce emission of fumes and smoke of factories.

Choose the word(s) CLOSEST in meaning to the underlined word(s) in the following question.

25 percent of the world's population consumes 80 percent of the planet's resources.

Choose the word(s) OPPOSITE in meaning to the underlined word(s) in the following question.

I don't believe in anything he says, he is unreliable.

Choose the word(s) OPPOSITE in meaning to the underlined word(s) in the following question.

If we continue to deplete our planets natural resources, we will damage the environment significantly.

Poaching ____ the greatest threat to many species.