Relatively cool areas on the sun's surface are called

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13

List five ways we are indebted to phytoplankton