Epimers are monosaccharide diastereoisomers that have a single asymmetric carbon. Anomers are diastereoisomers in which the hemiacetal carbon of a cyclic monosaccharide is asymmetric.
Determine whether each pair of monosaccharides consists of epimers, anomers, or an aldose‑ketose pair.

1) D-glucose and D-mannose
2) D-glucose and 1 fructose
3) D-galactose and D-glucose
4) D-glyceraldehyde and dihydroxyacetone
5) D-ribose and D-ribulose

What are two ways in which waves erode the land?

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?