4. Put questions to the following sentences. a. Every year many animals, plants, fish and insects are lost forever.
b. We can not get back the lost animals.
c. People cut down trees that support different kind of life.
d. Many animals are becoming endangered.
e. Every year there are fewer elephants.
f. The pollution also poisons animals or kills the plants.
g. Pollution is very dangerous for future life.
h. We need to protect the Earth from pollution.