4. describe a solution and tell if the parts are mixed chemically or physically will give brainliest

they emit helium gas that attaches to nearby planets.

they remove low-mass elements from the planets’ crust.

they cause nuclear fusion inside the inner core of planets.

they produce heavy elements such as iron and gold.

explanation:

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

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