Analogy or idiom? "he is a as a fork at an ice cream eating contest."

analogy or idiom? "don't worry: the teacher's bark is worse than her bite.”

An example of a fine motor skill is

Spider crabs live in the shallow regions of the ocean floor. algae tend to grow on the surface of spider crabs. the algae provide the crabs protection from predators by camouflaging them. the spider crabs give the algae shelter. what does this description suggest? 1. the algae are parasites of the spider crabs. 2. the algae and the spider crabs have a mutualistic relationship. 3. the spider crabs are commensals, and the algae are parasites. 4. the spider crabs benefit from the algae living on them. 5. the spider crabs are parasites of the algae.

Jerrold has to buy 12 copies of a textbook which costs $36.25 per copy. how much must he spend for them?