HUMAN CAUSES
human population increasing
Destruction of Habitat
Pollution of any sort
<span>global Warming
NATURAL CAUSES
</span><span>climatic cooling and heating
</span><span>changes in sea levels </span>
I'm not 100% percent on this but my class is working on cells and I believe it to bee either letter B. or D. to narrow it down for you
Answer:
Where below?? please complete your question
A when volcanoes irrupt I think
