Answer:
The regions have fresh summers and wet winters with mild weather. A continental moderate climate is another sub-type of temperate climates. These regions have hot, rainy summers and cold, dry winters.
History is an impact value
I think the correct answer from the choices listed above is option B. With regards to environmental changes, they may affect several populations in an ecosystem because it is where living organisms dwell and they try to adjust accordingly to these changes. Hope this answers the question.
Watershed is probabley the answer you are looking for