Question

People and animals living in low-lying areas of Lake Nyos in Cameroon, Africa, were killed after carbon dioxide escaped

from the lake and moved across the land. This is an example of
a. how human activities can affect humans and the environment
b. the fatal consequences of industrialization
C. how natural processes can introduce harmful materials into the environment
d. the dangerous effect of livestock competition

Answer 1

C because the question says that it came from the lake not that it was caused by people and does not mention anything about livestock competition.

Answer 2

C. how natural processes can introduce harmful materials into the environment

Step-by-step explanation: