20 points, quick question After one species disappears, the other species in the ecosystem .
a. benefit
b. are thrown out of balance
c. die
d. are unaffected

How do chloroplasts set plants apart from other living things

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute