Which of these is an example of active immunity?
a. a pregnant women passing antibodies to the fetus across the placenta.
b. a pregnant women giving antibodies to an infant through breast milk.
c. a person developing antibodies against the measles vaccine.
d. a person receiving antibody shots after being bitten by a rabid animal.

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.