Which picture shows eutrophication?

Why is the future for life on earth bleak?

Alow pressure system is formed when an air mass cools over a cool surface and sinks. true or false

In an effort to japan recover from the devastating effects of the 1929 depression, japanese military leaders in the 1930s formed an alliance with nazi germany negotiated more trade treaties with the soviet union closed its doors to western trade adopted a policy of imperialist expansion