What is the answer for
34

compost can be added to topsoil as a:

pesticide

the supermassive black hole is in the middle of the galaxy.

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

if you know your abc's you should be able to get your answer or just use google