Fertilizer runoff has a negative impact on aquatic ecosystems because
a. it causes plants and algae to grow quickly, suffocating organisms in the water
b. phosphorus is not found in nature
c. phosphorus is poisonous to living organisms
d. living organisms do not require phosphorus in order to survive

ill try to . no promises tho.

explanation:

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.