What is an ecological risk assessment

Ecological Risk Assessment (EcoRA) involves the assessment of the risks posed by the presence of substances released to the environment by man, in theory, on all living organisms in the variety of ecosystems which make up the environment.

Explanation:

Ecological risk assessments can be used to predict the likelihood of future effects prospective or evaluate the likelihood that effects are caused by past exposure to stressors retrospective

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the economic difference between the three colonial regions. shipbuilding, whaling, fishing, and trapping where also main factors to the economy. the southern regional colonies economy was based on sugarcane, rice, cotton, tobacco, and indigo.