Identify the theme or themes exemplified by (a) the sharp spines of a porcupine, (b) the cloning of a plant form a single cell, and (c) a hummingbird using sugar to power its flight.

Which of the following is not a characteristic of carnosaurs? a. long narrow skulls b. strong forelimbs c. horn projecting from their skulls d. none of the above

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel

Your two friends just told you what to order for them at the drive through fast food restaurant. you give the order but when the food comes about 10 minutes later, you don't remember what each of your friends ordered your memory of the order was in __ memory. a. semantic b. flashbulb c. long-term d. short-term i think i know but i'm not really sure