Michelle Mclean

English

30 March, 09:39

Read the passage.

Metamorphosis is the process by which caterpillars become butterflies and tadpoles become frogs. It is a process studied by young children in school and by scientists who want to understand how pollution affects an eco-system. But change is not just a scientific phenomenon. It is a part of life. We experience it every day.

Which best expresses the main idea?

1. Frogs start life as tadpoles.

2. Change is a part of daily life.

3. Pollution affects both animals and humans.

4. Metamorphosis means the process of changing.