It is known that 3% of people whose luggage is screened at an airport have questionable objects in their luggage. what is the probability that a string of 15 people pass through screening successfully before an individual is caught with a questionable object? what is the expected number of people to pass through before an individual is stopped?

Students will complete the star 360 test once a quarter t or f

In this food web, which group would increase in number if snakes were eliminated? a. producers b. decomposers c. primary consumers d. secondary consumers e. tertiary consumers

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.