Ineed
the organisms within an established ecosystem interact and form relationships with each other over time. this interdependence allows ecosystems to remain relatively stable for hundreds and sometimes thousands of years.
which of the following would likely decrease the population size of an established plant species?
introduction of a non-native species
an increase in available nutrients
a sudden change in climate
an extended drought

An increase in avaliable nutrients

Explanation:

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.