Erica has six pet rabbits. Each one lives in a separate cage. She thinks that her rabbits would prefer to sit on a pile of hay rather than on hard cage floor. Erica put hay in one corner of each cage. What data should she collect to help her test her idea?

Answer is in the file below

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osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.