What is an Earth Unit (E. U)?

Earth mass ( M ⊕) is the unit of mass equal to that of the Earth

Explanation:

Earth mass is often used to describe masses of rocky terrestrial planets. It is also used to describe Neptune-mass planets

The Earth mass is a standard unit of mass in astronomy that is used to indicate the masses of other planets, including rocky terrestrial planets and exoplanets. One Solar mass is close to 333,000 Earth masses.

Astronomical unit (AU, or au), a unit of length effectively equal to the average, or mean, distance between Earth and the Sun, defined as 149,597,870.7 km (92,955,807.3 miles). Earth mass ( M ⊕) is the unit of mass equal to that of the Earth. 1 M ⊕ = 5.9742×1024 kg. Earth mass is often used to describe masses of rocky terrestrial planets. It is also used to describe Neptune-mass planets. One Earth mass is 0.00315 times a Jupiter mass.

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which elements do geologists measure to determine the age of an organism’s remains? check all that apply.

carbon-14

nitrogen

carbon-12