Why do you think a pregnant woman needs more energy from food than a woman who is not pregnant?

The speed of light can be used to measure the

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom