How would you classify the idea of the earth being flat? bio question

Could someone me with number one you

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.