Câu hỏi:

Man and most animals need a constant supply of water to live.

But we can stop adding the problem while scientists search for answers, and laws are passed in nature’s defense.

Choose the word whose main stress is placed differently from the others in each group

The loss of much forest is destroying Earth’s plant and animal variety.

Without plants, most water would run off as soon as it falls, taking away valuable soil.

Each year about fifty hundred species of plants and animals are already being eliminated.

This is especially worrying when there are about 3,000 plants with values as medicines against cancer, AIDS, heart disease and many other sicknesses.