Which of the following is the best definition of a scientific theory? A.
a broad, well-supported explanation of related observations or events
B.
a description of a natural phenomenon that is always observed to occur under specific conditions
C.
a plausible answer to a scientific question that is used to guide research
D.
a highly tentative statement about the natural world that is likely to be significantly changed or discarded

explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

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.

i think that it is c, d, and e, hope this