A planet orbits a star in a planetary system, and it takes 8.0 Earth years for the planet to
complete one revolution. If the mass of the star
is about the same as the mass of the Sun, and
the mass of the planet is the same as the mass
of Earth, the semi-major axis of the planet's
orbit is:

no simpler subs form complex ones. synthesise = make

mass and volume are the answers you are looking for

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.