How have these substances been affecting children?

typically, most spiders possess eight eyes. however, others have as many as 12, and some don't have any. these eyes are for detecting light from dark, deciphering shapes and for gathering their prey.

it's unlikely a majority of a large population would agree on issues

hope this : )

they deliver oxygen to the blood

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.