Ответ:

1.A person who can travel or live in space.(astronaut)

2.Tests to check ideas or make new discoveries in science!(experiments)

3 A gas that humans and animals breathe.(oxygen)

4 Special clothes an astronaut wears to go on spacewalks.(spacesuit)

5 Very little things inside the food we eat or tablets to keep us healthy.(vitamins)

Объяснение:

1) astronaut

2)experiments

3) oxygen

4) spacesuit

5) vitamins