6. In the environment, materials causing biomagnification
A) get recycled quickly
B) decompose only in soil
C) remain as permanent residues
D) are stored in less amount in trophic levels

The correct answer is Option C) remain as permanent residues.

Explanation:

Biomagnification is a process in which harmful or toxic substances collected in the body of living organisms as a permanent part of the organism. The toxic substances are not decomposed by microorganisms such as bacteria. The concentration of toxic materials is increased with the increased in trophic levels.

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.