The powerhouse of the cell: that is a term used to describe the because it's main function is to produce energy for cellular activities.
a) nucleus
b) mitochondria
c) golgi bodies
d) endoplasmic reticulum

The mitochondria is the cell's powerhouse. It is the site of cellular respiration where energy is produced. The nucleus would be the control center; the Golgi bodies package molecules; the endoplasmic reticulum is the transportation system throughout the cell.

Explanation:

answer: 4

explanation: 8

compost can be added to topsoil as a:

pesticide