grade 5 , con 3 ,lesson 1

The Sun provides the Earth with:

On extreme hot climate, the water of a lake

All the following factors pollute the water, except

All the following are affected by water pollution, except

If the amount of grasses increases in an ecosystem, this directly increases the number of

Overfishing and throwing plastic directly garbage in the sea affect the survival of

When the number of..............., the amount of grasses in an ecosystem increases

All the following are human activities that affect a marine ecosystem, except

When there is a gentle rain in a desert ecosystem, this ecosystem may be

All the following are top predators, except