Cutting down trees has a negative impact on an ecosystem.
Rainforests are destroyed by logging and all of the trees are cut down.
Logging has a negative impact on an ecosystem.
What has a negative impact on an ecosystem?
Options:
[a] Replanting trees
[b] disease
[c] Pesticides
[d] Logging
[e] Cars
[f] Pollution
[g] Cutting grass
[h] Environmentalists