Answer:
D. Carbon dioxide and water vapor
DNA Mutations (Mutagens) causes this. Take a look at lung cancer..<span>and mutagens that cause cancers are known as carcinogens. (Hope it helps my friend)</span>
Answer:
Geological, chemical, paleontological.
Explanation:
Geological evidence for ice ages comes in various forms, including rock scouring and scratching, glacial moraines, drumlins, valley cutting, and the deposition of till or tillites and glacial erratics.
Successive glaciations tend to distort and erase the geological evidence, making it difficult to interpret.
It took some time for the current theory to be worked out.
There have been at least four major ice ages in the Earth's past.
Paleontological by their bones, remains
