Researchers notice that animal populations in a wildlife preserve have been decreasing. Which step should the researchers perform to obtain the most valid data about the decreasing animal population?
O A. analyze data about areas of the preserve that require extensive maintenance
B. count and track the number of guests visiting the preserve on a weekly basis
C. throughout the year count and record animals throughout the preserve, as well as log animal deaths
O D. interview current and former employees about their favorite animal found in the preserve

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.

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.