Why do you think the sun is able to do this? For solid it could be melting into a liquid, for gas it could be Evaporating into a liquid.

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.

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).