How do astronauts avoid muscle atrophy in space?

a. they eat a lot.

b. they sleep less.

c. they exercise.

d. they sleep more.

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer

What is the temperature in degrees celsius of a substance with a tempature of 49k

What quantity do units represent in value