Please help! it's timed

ignore my answer and please help!!

Barbara is converting 78°f to degrees celsius. first, she subtracts 32 from 78. what is the next step?

Now it's your turn to investigate human impact around the world. grab your virtual lab coat and put on your environmental science hat. you will be taking a trip around the globe to explore three locations. at each location, you will investigate the cause and effect relationships of deforestation, desertification, and urbanization. you will also gather evidence of how these factors have impacted the environment over time

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry