Cross-sectional studies and longitudinal studies differ on whether people undergo intellectual decline as they age. Explain how this is possible. Then, describe the distinction between fluid intelligence and crystallized intelligence, and explain how each can change over time.

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a