Give a reason for the Earth's albedo to be lowest in low latitudes and highest at longitude

In a world that produces enough food for every human, why is the distribution of food consumption and production so unequal? in a few sentences, explain why production and consumption of food is lower in the least-development countries (ldcs).

Explain how a convection current in the earth is formed.

Based on the information in the graph, what can you conclude about humans in the world in general?