Impact 02. Unit 1. Reading pp. 16, 17

Purple was cheaper in the past than in the present.

• True

• False

Some scientists believe that the first organisms on Earth were green.

• True

• False

Chlorophyll is the reason of the purple color.

• True

• False

It was very difficult to make purple color in the past.

• True

• False

People used to make purple dye from snails.

• True

• False

In the sixteenth-century, everybody in England could wear the purple color.

• True

• False

Queen Elizabeth discovered how to create purple color.

• True

• False

People used to make purple dye from snails.

• True

• False

William Perkin discovered how to make purple dye by accident.

• True

• False

Chemical dye is cheaper and easier to make than snail dye.

• True

• False