Which of the following is considered the world's largest oil spill?
A) Blowout of the Ixtoc 1 oil-drilling platform in 1979.
B) Explosion of the Deepwater Horizon oil-drilling platform in 2010.
C) Intentional dumping by the Iraqi army in 1991.
D) Rupturing of the Exxon Valdez supertanker in 1989.
E) Spillage from natural seeps and regular human activities every year.
Question 2
Strong attachment threads, biological adhesives, a muscular foot, multiple legs, or hundreds of tube feet are adaptations to cope with which of the following adverse conditions of the rocky intertidal zone?
A) Difficulty finding mates
B) Drying out during low tide
C) Lack of space or attachment sites
D) Predators
E) Strong wave activity