Please help me with number 4 please I really need help

Japan is a group of four islands off the coast of asia. what effect do you think has had on the lives of the japanese?

Sink holes may eventually for to join a. wide valleys b. zone of aeration c. dripstones d. aquifer

The us and canadian governments are doing all of the following to combat environmental problems except a. encouraging the use of public transportation b. enacting clean water policies c. requiring emissions testing d. limiting animal populations in some regions