The phrase that it refers to. there's two questions

What is the missing step in this proof? scroll down to see the entire proof.u

What is it called when someone gets sick from eating food contaminated with germs or toxins? a. potentially hazardous food b. ptomaine poisoning c. foodborne illness d. raw food

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.