It is warmer at the equator than at 80° N because .

the sun's energy is spread out over a larger area at the equator
the sun's energy is spread out over a smaller area at the equator
the equator receives more sunlight
the equator is closer to the sun

Photosynthesis converts light energy to chemical energy. which molecules are the end product of this transformation of energy in this reaction?

How did the miller-urey experiment impact the way scientists think about the origins of life? use what you know about the miller-urey experiments to discuss the factors needed for life to arise, and speculate on whether life could arise on another planet.

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.