Answer:
When winter arrives availability of food and water decreases so birds travel to warmer places to escape the cold also to survive over there
Explanation:
hope it helps
the answers I put is wrong
Just saying it says 8 points ya little baka
I think false because no one knows what will happen in the future and anything is possible, although the population does increase it can still decrease by high amounts aswell, anything bad could happen any time. People may not even have money to survive but it really depends on what happens and what could happen in the future, no one really knows what will happen so this statement would be false.
Anyway have a nice day :)