Lipids, like those in butter, can be broken down into the simple substance that make them up called? A. starches B. amino acids
C. Carbohydrates
D. fatty acids

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection

What is the difference between a scientific hypotheses and a scientific theory?

Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.