Объединить 2 предложения в 1 и внести необходимые изменения people leave litter in the forest - it hurts the animals . factories and cars pollute the air - it causes climate change

People leave litter in the forest hurting the animals.
Factories and cars pollute the air causing climate change.

It hurts the animals that people leave litter in the forest
The climate change causes because of factories and cars pollute the air