Which is the strongest of the four fundamental forces?
strong nuclear
weak nuclear
electromagnetic
gravitational

How can you approximate the number of calories required to keep you in energy balance?

Are the earth's ocean floor and continents the same age geologically? why or why not?

Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.