Im doing the same exam lol.
Answer:
Population studies look at factors for one individual species.
Explanation:
In a garden, there are multiple species of plants growing. You could study different factors of each population, which is just all the individuals of one species in an area. For example, you could study how adding fertilizer affects the growth of tomato plants. To do this, you would have some tomato plants in the garden that have fertilizer added to the soil and some that don't. At the end of a certain period of time, maybe a month, measure the plants, find the average height and compare their growth. This is just one example, but there are lots of different things you could study.
The environmental change that is caused by the increasing levels of solar energy will cause the melting of the ice at the poles and hence increase the sea level, whereas, the movement of tectonic plates under the surface of Earth causes the drifting of the continents. We have surely come across the formation of new islands, mountains and vanishing of existing land masses due to the movement of tectonic plates in the past.
Hence the continent drifting is caused by the movement of tectonic plates. This is definitely a long-term change since the time period taken for such geological changes is large.
Hence the option B applies to our answer
