Each nucleotide only pairs with one nucleotide
Some isotopes are radioactive, which makes them suitable for medical imaging procedures. Radioactive isotopes have found a wide range of use in medicine. For example, they are used as tracers for diagnostic as well as research on metabolic processes. They are also used in medical imaging procedures, these isotopes include fluorine-18, gallium-67 among many others.
In my opinion it is tears.
Answer:
It will be C( Magnesium absorbs red and blue light but reflects green light)
Earth's orbit and climate change
