D) The Earth has changed over geologic time. Hope it helps!
The correct answer is (b) values
The ideas, things or events people feel are important in the life of an individual, called as values. The way they think, the things they do and the events that people feel are important in life because it makes life worth it. As every person is different from other, it is their values that makes one different from other. It is the only thing that makes a human behavior.
They release carbon dioxide into the atmosphere which in effect create green house gasses
I believe that the answer is A, if I am not mistaken!
