What are 3 basic principles of natural selection and evolution?

Look at the picture below . what does this picture represent ?

Are the earth's ocean floor and continents the same age geologically? why or why not?

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels