Answer:
Because the diseases were unknown to them, they spread easily and could kill off thousands of their kind.
Answer:
Both are organized social movements that seek to protect or conserve consumers and the environment respectively.
Explanation
The Consumer Movement is an effort to promote consumer protection through an organized social movement which is in many places led by consumer organizations.
The Environmental Movement, also including conservation and green politics, is a diverse scientific, social, and political movement for addressing environmental issues.
