The answer would be
D. Prime Meridian
By the mid 2030's. You can find it on their website.
Mountains, lakes, rivers, caves, and valleys
The water cycle is also know as the hydrologic cycle.
The right answer is answer d.
Hope this helps!
Answer:
Birth rate.
Explanation:
Countries such as Japan are dealing with a low Birth Rate, meaning the population is aging due to the lack of births to lower the average age.