1. sex-linked disorders are carried on the y chromosome, and they can only be expressed in males. true or false? 2. how much of the earth's atmosphere do scientist believe was made of oxygen 2.3 billion years ago? a.) 70% b.) 22% c.) 1% d.) 10%

what are the options

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."