1
They are formed by the interaction of living and non-living things.
2
Group of living things of the same kind that share the same habitat at the same time.
3
It is made of all the populations that live in an area
4
The non-living elements like soil, water, sunlight and air.
5
Living organisms like plants, fungi, and animals.
6
It forms rivers.
7
It provides plants with nutrients.
8
It contains oxygene
9
It is the main source of energy.
