Two of the nitrogen bases are single ring structures known as

Explain how scientists use geologic time to determine the age of landforms.

What's the waste product of electrons and pyruvate combining in fermentation?  

Pink fur (p) is dominant to purple fur (p) in hamsters. two heterozygous pink hamsters are crossed. what is the probability that these two parents will have an offspring with purple fur? 2/4, 1/2 or 50% 1/4 or 25% 3/4 or 75% 4/4 or 100% there is no chance for this type of offspring