Select four of the following that are true of compounds.
a
they are held together by chemical bonds.

b
they are made up of a single type of atom.

c
they can be represented with a chemical formula.

d
they cannot be broken down by physical processes.

e
they cannot be broken down into smaller substances.

f
they are made of two or more different elements.

the right answer is A,C,and F

Explanation:

because a compound is the combination of 2 or more element that are chemically bond

they are made of gases.

they have a spherical shape.

they make energy through fusion.

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.