Answer:
The uneven heating of the earth.
Explanation:
Convention current is the entire chunk of liquids or gas that move from one place to the other. It is not just the transfer of heat and energy but the mass movement of fluids as well. This transfer drives the oceans’ current and the atmospheric weather. Since heated fluids like the ocean’s water bodies are less dense, according to science, they will rise up above and pull the cooler air into its place. There are various conventions, which include oceans, air, and water conventions. They all follow the same principles and as a result affect weather and climate.
Trial and Error best describes the problem-solving approach to the concrete operational thinker because children during 7 to 12 years old think unsystematically for a solution.
Moreover, concrete operational thinkers uses several methods to solve a problem. When one method does not work, then another method is use until it satisfy the problem. This example defines trial and error method.
They want fo join peace keening force to keep the peace with people and not be in fights.
