The answer to your question is:
C. Were dirty, crowded, and unhealthy.
<span>It fell under the control of the United States and the Soviet Union</span>
<span>Nairobi is the capital city of Kenya</span>
"<span>Plants and small animals might suffer, and some might die" would be the best option, since the poor air quality would most likely affect certain plants and not others--some of which would be used for food by small animals. </span>
