True or false. pesticides can be derived from synthetic chemicals and from natural materials.

The many volcanoes located along the edge of the pacific ocean make up the ring of fire. how does subduction play a role in the volcanic activity in the ring of fire?

What do lava flows made of aa indicate about the type of volcanic eruption that occurred? a. the eruption was viscous. b. the eruption was pyroclastic. c. the eruption was explosive. d. the eruption was quite. !

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine