Fill in the gaps using two words for each sentence natural phenomena human mind prehistoric times earth description social science physics class Chemistry, physics and biology study . Psychology studies and behaviour. Medicine has been practised since . The word "geography" means " ". Economics is a . It studies goods, services, trade and money. We learned about the law of gravitation in our .

Задание

Fill in the gaps using two words for each sentence

Chemistry, physics and biology study [ ][ ].

Psychology studies [ ][ ] and behaviour.

Medicine has been practised since [ ][ ].

The word "geography" means "[ ][ ]".

Economics is a [ ][ ]. It studies goods, services, trade and money.

We learned about the law of gravitation in our [ ][ ].