- Cutting down trees in a forest causes the number of trees to decrease in that forest
- A tree is a source of shelter / food for birds / animals in an ecosystem
- Hence, cutting down trees in a forest causes the shelter for birds in that forest to decrease

Hence, cutting down trees in a forest causes the shelter for birds in that forest to decrease
[Question]Some birds live in a forest. If many of the trees in the forest are cut down, the shelter for the birds will
[Context]- Cutting down trees in a forest causes the number of trees to decrease in that forest 
- A tree is a source of shelter / food for birds / animals in an ecosystem