MCQ PracticeWhich of the following layers of earth have the composition of peridotite?Subject: Biotechnology EngineeringTopic: Environmental BiotechnologyAUpper mantleBInner coreCOuter coreDContinental CrustCorrect Answer: BPractice QuizBack to MCQsRelated MCQsCurrent flows in a circuit whenEighttenths coulomb passes a point in 4 s. The current in amperes isThe unit of electrical charge is the