3. pick a place you are familiar with. what species are threatened with extinction in that region ? why are they vulnerable ? suggest steps that could be taken to increase their population.

As explained below.

Explanation:

Any species in the ecosystem which is or is less in numbers and can go extinct or fade away from the surface of the earth either by a man-made or natural cause is considered to be an endangered species EN as per the Red list of species published big data book of the IUCN. Thus the species falls vulnerable unable to withstand the impacts of a hostile environment and which is compromised in its loss due to the depletion of food resources and the depletion of the habitat of species. These species should be identified and should be kept away from the reach of the man in the biosphere reserves that allow their population to bounce back and thereby their survival rates are high. Keeping hem in breeding grounds and restoration of there lost habits is a must

Answer (d) may increase or decrease porosity through dissolution or deposition;

How many miles is each lap?