The diagram shows a straight chain of glucose molecules. Which carbohydrate is shown above?
O fructose
O sucrose
O galactose
Ostarch

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.

Which description provides the best objective summary of the article in the passage?

Why do we perceive objects as retaining their brightness under different lighting levels?