To test a new drug that has the potential of curing people of the common

cold, a company asked human volunteers who were coughing and sneezing

to participate in a clinical study. the objective of the experiment was to test

whether the new drug could cure the volunteers in the experimental group of

the common cold.

genetic variation will increase because of a new habitat and food source.

explanation:

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.