What factors threaten eastern europe's marine ecosystem?

farming
forestry
industry
tourism
transportation
wetlands

An outcome of which rerutions) resulted in conflict and a temporary return to absolute de

How do private property rights serve as an incentive in a free enterprise economy ?

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal