The pressure in the mesosphere is so low that a person could not be in this layer without a spacesuit true or false

This is true that the pressure in the mesosphere is so low that a person could not be in this layer without a spacesuit.

The mesosphere is the region of the earth's atmosphere which is above the stratosphere and below the thermosphere. It has a very low temperature and pressure. The top of the mesosphere is the coldest part of Earth's atmosphere.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

c. is the correct answer