Where they have there effect on the tissues cells
Answer:
b it does not really help structural support that is more a cell wall thing
Explanation:
A basic tenet of modern biology, first stated by Matthias Schleiden and Theodor Schwann in 1838–39, that cells<span> are the basic units of structure and function in living organisms. ... A </span>theory<span> of heredity must be reconciled with the </span>cell theory<span>.</span>
Because if we use too much coal we are wasting fossil fuels and burning coal hurts the environment so the alternative energy sources provide clean energy
The food sources available for a particular species in an ecosystem. Also space where they can live and reproduce, but food is the main factor.
