For the last 30 years, human use of fertilizers has had a significant impact on the nitrogen cycle. Which statement explains how fertilizers impact an ecosystem?

O Fertilizers increase the amount of fixed nitrogen available in the ecosystem.

O Fertilizers decrease the amount of nitrogen fixed by organisms living in the ecosystem.

O Fertilizers kill off important nitrogen fixing bacteria.

Fertilizers decrease the amount of fixed nitrogen available in the ecosystem.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

ι вєℓινє тнє αиѕωєя тσ уσυя qυєѕтισи ιѕ в. ℓуѕσѕσмє

ι нσρє тнαт ι ¢συℓ∂ нєℓρ уσυ.

cell division is not regulated in tumor cells.