In an atom, electrons A. are paired with protons. are paired with
protons.

are found within the
nucleus
Stay in a region called the electron cloud

orbit the nucleus
like planets around
the Sun

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101