Acid rain is an example of a. a primary pollutant b. a econdary pollutant c. a tertiary pollutant d. none of the above

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?

Which of the following was a characteristic of a dromaeosaur? modified front claw grasping with their forelimbs both a and b none of the above

What is the process of a new plant growing from its seed into a seedling? primary growth fertilization pollination germination