Why does a cell make a copy of its DNA before it divides?

The method of using specialized instruments and geometry to determine distance and elevation of specific areas is known as: a. digitizing c. global positioning b. mapping d. surveying

Which of the following statements about diploblasts and triploblasts is false? a. Animals that display radial symmetry are diploblasts. b. The mesoderm gives rise to the central nervous system. c. Animals that display radial symmetry are diploblasts.

Which of these animals was unable to adapt to a warmer climate?

Sometimes an economy cannot grow because of external factors, such as ___. A. lack of skilled labor. B. poor infrastructure. C. low domestic demand. D. low demand for exports.

Alonte is viewing a cell under a microscope. The presence of which of the following cell structures would tell him that the cell is eukaryotic? Choose 1 answer: Ribosomes Cytoplasm Nucleus DNA

Humans are predators. true or false

What has the us government done to regulate power plant emissions

Which nucleotide component contains nitrogen

Which trace mineral is important for activating a key enzyme in gluconeogenesis?

Which types of marine life will be hurt by increasing carbon dioxide levels? 1. Algae 2. Clams and Snails 3. Coral 4. All of the above