Very heavy elements such as gold and uranium are formed by hydrogen burning in small stars

nuclear spltting

supernova explosions

loss of neutrons

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.

high growth (apex)

i think the answer is a.keratin is the pigment responsible for skin color.