Which of the following geologic processes occurs in the shortest amount of time? A. the erosion of a river canyon
B. separation of continents
C. the formation of an island chain
D. an earthquake

During convection, less dense fluid rises and denser fluid sinks.

Where is having brightly colored feathers that attract mates most clearly an adaptation for a bird? a. a forest with dense vegetation b. a sandy beach beside an ocean c. a snowy tundra with little vegetation d. a swamp with many hawks that eat birds

Which process involves glucose reacting with oxygen to produce energy, carbon dioxide, and water? a. photosynthesis b. atp production c. glycolysis d. cellular respiration