Which environmental statement is true?

Question $3$ options:

$1)$

An American consumer can cause more tropical rain forest destruction than a poor person living within the forest itself.

$2)$

Because of technological breakthroughs, people living in developed countries put less strain on the environment than do people in poorer countries.

$3)$

There are only about $1000$ species of animals left in the world.

$4)$

The United States consumes only its proportional share of the world's irreplaceable natural resources.