The pregnancy test strip detects the presence of human chorionic gonadotrophin in urine. this hormone is initially produced by the fetus and later by the placenta. why is the test strip preferred for this test rather than using either a direct or indirect elisa with their more quantifiable results?

i think its y= -4x-14

me and my friend did 2

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.