I'm not sure, but I think it would be mud.
Answer:
Explanation:
Global warming is the increase in the Earth's temperature caused by the buildup of greenhouse gases in the atmosphere such as carbon dioxide, methane, and nitrogen. The absorbed energy warms the atmosphere and the surface of the Earth.
They grow much faster and they grow to be larger than normal crops.
Answer:
down syndrome
Explanation:
people with down syndrome have an extra chromosome in the twenty-first pair