Which set of terms best describes a community of miners who live out in the countryside of west virginia and used specialized geological equipment to analyze the composition of rock?

a. low income, urban, high density

b. high income, rural, high density

c. rural low density, advanced technology

d. middle income, urban, low technology

equal distribution i think.

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

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.