What is clonal selection?

Clonal selection can be defined as methods or processes that shows(describes) tthe way  lymphocytes  do react or  respond to the various different types of antigens present in a particular body. Clonal selection is of the notion that  lymphocytes are taken during antigen presentation .

Explanation:

Clonal selection is important as it is  sometimes used during negative selection during T cell maturation. it is believe to be a major cause mutations of antigen-binding affinity in memory cells during clonal expansion .

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.