Answer:
convergent plate boundaries
Explanation:
M pretty sure it would be D
Answer:
The effects would be pretty negative.
Explanation:
Because as population increase, there would be an increase of demands or needs. As a result, resources would decrease such as wood, freshwater, animals (since some animals have already gone extinct). As for the environment, yes there would be some people trying to change the environment but people with big money, own big companies and because of that, there would be a problem. These big companies don't really care about the environment only the cash itself. So, they would pollute the water, and due to the dirty water, aqua animals will die. In addition, when the population increase, people would litter, I know that there are laws in it, but there's still trash on the ocean and the ground. Therefore, population can effect the resource and environment by increase the demands of needs and the environment slowly diminishing.
Also, if the population decrease, the effect will still be negative towards the environment but there would be a hope for change or action for change. The resources might increase because we won't need to cut down many trees, overfish or overhunt, and etc.
Convection currents is the movement of a fluid or a gas from one particular location to another location. This motion is created by the difference in the density or the temperature of the fluid or gas in the two locations. It could also be used in the movement of energy from one location to another due to the temperature gradient. For convection current in the atmosphere, it could be describe in the rising of warm air towards the upper portion of the atmosphere while the colder air goes under it. This happens because warmer air would have less density as compared to the colder air.
Not as old as those found in deeper layers