Answer:D
Explanation:
Human activity and natural events both effect the ecosystem causing change.
Answer: it is D : their motion increases
Explanation: because as heat is increased it causes the particles to gain more kinetic energy making them move faster thus increasing their motion and leading to more successful particle collision .
HOPE THIS HELPS!!!!!!!!!!!!!!!!!!!!!!!
It's aimed at helping people to become aware of when they make negative interpretations, also it helps people to develop new ways of thinking which will lead to reducing distress.