Describe two or more environmental problems and tell what can be done

Which of the following is NOT a monomer (a unit that makes up a macromolecule) ? a. A monosaccharide b. An amino acid c. A nucleotide d. A protein

Describe three properties of mitochondria and chloroplasts that support the endosymbiotic theory. Be sure to explain your answer.

Which of the following eras occurred first? A. Precambrian B. Mesozoic C. Cenozoic D. Paleozoic

Which of these is NOT a way, or a proposed way, to store nuclear fuel rods after they have been used in a nuclear reactor?

An amoeba is trying to capture food particles in water. How will it feed on this particle? a. by capturing it by means of flagella and enclosing it in a food vesicle b. by engulfing it using pseudopodia and enclosing it in a food vacuole c.

Suggest ONE reason why some plants have no dispersing seeds

Which of the following is a possible order of the scientific method

What system that removes waste from the body and controls the body's water levels?

How is a scientific law formed?

Approximately, when was the structure of DNA first described? 1900 1950 1800 1850