Which of the following is true of chloroplasts?
a. they're full of flattened stacks of membranes called stroma.
b. they're found in animal cells.
c. they're the main site of photosynthesis in autotrophs.
d. they're composed of a liquid-filled space known as the thylakoids.

The correct answer is C. :)

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 : )