What's the purpose of the body's immune system? A To block pathogens from infecting the body
B To fight off infections
D All of the above

Which is an example of a decomposer? a. bear b.algae c.grass d.bacteria d bacteria

The intervention of extraterrestrials has been used to explain the bermuda triangle, a region of the atlantic ocean where ships and planes are frequently lost, leaving no evidence behind. how would this explanation best be characterized?

What is the next step in muscle contraction after the actin changes shape