B uses radiation so I would assume it would be the one using x rays
It would be virus. I’m sure. The rest can’t do harm. “If you are pregnant, it's important to take precautions against viral infections. A viral infection is a contagious illness. Most viruses will not hurt your baby. However, some viruses can cause miscarriage or birth defects in your baby.”
Answer:
c
Cause at the bottom it is cold and up top is warmer
Atom refers to a tiny particle, which is the basic building block of all the substances and whose properties determine the characteristics of an element made up of only of those atoms.
All the living and nonliving matter in this world are made up of atoms and elements. Everything in the universe is matter, and matter comprises elements. Some of the elements are important to living things.
Elements are formed by atoms, and atoms comprise protons, electrons, and neutrons. The number of protons in an element's atom signifies the identity of the element.
