1. list five observations darwin made about the amblyrhynchus lizards.

they are poikilothermic or cold-blood

been seen eating the feces of crabs and sea lions

only ocean dwelling iguanas in the world

orient themselves so that they absorb sun through the skin

salt glands connected to the nostrils allows them to expel access sea salt

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.