The are responsible for seeing black and white during relatively low-light conditions.

The retina of the human eye is made up of light sensitive neurons which are arranged in three layers. The first layer consists of rods and cones. The RODS are responsible for seeing black and white during relatively low-light conditions. While the cones are responsible for color vision.

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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.