Which of the following types of landforms can also be called a “depression” because it is naturally lower than its surroundings?
a. a plateau
b. a valley
c. a mountain
d. a hill

B. a valley

When you see a valley, it normally starts off with a high elevation, but then drops low before curving up again.

my explanation of a valley is horrid, but if you google pictures of a valley you would understand. :)

b. a valley, can be called as a depression and its naturally lower than the surroundings, of a mountain or a hill or the  plateau.

Explanation:

Valley are usually v-shaped rivers and the valleys of the mountains are U-shaped types and thus they are the lowest point of the surrounding areas and hence are lower than the surrounding land masses. The lowest point of the valley can open up to the ocean ore the sea level or valley bottom that has various features formed by the ink and the collapse of the ranges or trench formations. Thus valleys represent the depressed landscapes that have been blown down or reduced by the active geomorphic event and these are activated form the surface above that bring down or lower the base of the landscape like the winds, river water, glacier ice and man himself.

Answer (d) the greenhouse effect is primarily caused by car and trucks;

The latin america and caribbean (lac) region encompasses countries with great environmental issues. the southern portion of central america to the caribbean's part, including south america presses the major environmental issues like deforestation and   habitat subsistence. the requirement of the whole country and the pressure of export is being done by this region as it possess the soil with highest fertility rate and maximum strength which could us in modifying the various technology for the humankind. because of deforestation, we take animal shelters away from them, so the major issue occurs again which we known as "habitat subsistence". government has to set the target according to the capacity of a certain region which would not affect the environment. then, businesses and organizations have to understand their roles and need to divide the task into several groups (one for each, according to their natural capacity), individuals can the government or statuary body by just following their guidelines and never harm or exploit the environment for our own use.i really hope this you out!