Our solar system consists of the sun and the 9 planets and their moons.
The galaxy is outside our solar system.
Answer:
A. carbon and boron
Explanation:
Carbon and boron is not an alloy.
An allow forms between metals and metals using their huge electron could.
Carbon is a non-metal, boron is a also a non-metal
Two non-metals combining together does not make an alloy.
Iron, nickel, aluminum are all metals.
A. Condensation
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The energy of the wave decreases gradually
