4. The term "in situ" is used by doctors to refer to organs or structures that are studied without removing them from the body. For example, a photo may show
a picture of a heart in situ. How is the term used to describe turtle nests?

i would say it is

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )

its temperature is increasing. this causes molecular vibrations to increase.