Exchange rate systems in which governments try to keep their currency values consistent with each other are called fixed exchange rate systems.
Wild life corridor is an area that resided specifically to separate wild plants and animals with human activities.
They are trying to overcome colonization, a limiting factor that states in order to fully test survival capabilities of the organism, we need to give them the freedom to move from one area to another.
Here is the formula to calculate GDP:
GDP<span> = C + G + I + NX
</span>Where I is the investment that include all form of capital expenditure
Both sales mentioned above could be considered as a form of Capital expenditure, so the total contribution to GRP would be:
$30 + $ 15 = $ 45