Which is a carbohydrate?

amino acid

nucleotide

polysaccharide

nucleic acid

Minerals will form from a solution when the liquid from the solution evaporates. true or false

What is topography and how does it affect the desert climate

Select the best option : - A testable explanation that's supported or refuted is called a/an ... A. variability. / B. hypothesis. / C. reaction. / D. experiment.

Which type of study design is used in the following scenario: A researcher interested in the incidence of chlamydia enrolls 1,000 college seniors. Sexual habits are identified at baseline and every 6 months thereafter for four years.

One negative effect of society's need for energy would include

Which vitamin does the human skin synthesize from the Sun's ultraviolet light?

Since dinosaurs cannot swim how can a fossil be found on all continents

Four different segments of a DNA molecule are represented below

Why is the action of phagocytes considered a nonspecific response? A It does not occur at any specific temperature. B It is not involved with the production of any specific type of lymphocyte. C It does not respond to any specific type of hormone.

Which statement best describes the relationship between the deer and the plants?