Give 2 examples of how the biosphere supports life

Last week i was assigned a thematic. we have groups of three but the people i was assigned with haven't been in school for days. i would appreciate if anyone can me with my thematic . i highlighted most of the important steps and i circled my thematic topic. in desperate need : ( its due on february 19

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

There are only about 250,000 known fossil species. true or false