Which process is needed for these runners to continue running?

Anaerobic respiration.

Explanation:

Anaerobic respiration is the process that is needed for the runners in order to continue running because running needs quick and huge amount of energy and this energy only supplied by anaerobic respiration. The Anaerobic respiration does not need oxygen for generating energy in the form of ATP so the runners gain energy from this anaerobic respiration process.

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.