Triangular trade connected these three regions of the world

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.

fir trees are found in areas with cooler climates. fir trees have needles for leaves and remain green year-round.

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.