All lines of longitude are circles true or false​

In 1915 the german geologist and meteorologist alfred wegener first proposed the theory of continental drift, which states that parts of the earth's crust slowly drift atop a liquid core. the fossil record supports and gives credibility to the theories of continental drift and plate tectonics.

If there are laws or rules in a society and they are in conflict, how do we decide which takes precedence?

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