Answer: a
Explanation: st. petersburg is a very wealthy and populated city
5 arrive - 3 leave = 2 left every minute
80 in total - 30 already there = 50 need to arrive
50/2
= 25 minutes
hope this helps :)
Answer:
The correct answer is <u><em>D</em></u>. Birthrates drop, and may even drop low enough to reverse population growth.
Hey there!
The correct answer to your question is the last option.
It takes 1,000 years to form fertile soil. It takes a very long time to form, especially in dry locations.
Hope this helps you.
Have a great day!
