Question

1. scientists believe there may be trillions of other smaller celestial bodies in the solar system. what do the smaller bodies lack to be considered as planets or moons?

chemical makeup and existence of water
mass and orbital path
atmosphere and surface gravity
age requirement and distance from the sun

Explanation:

Planets and moons have specific characteristics. One key factor for classification is their mass and orbital path. According to the International Astronomical Union (IAU) definition of a planet, a planet must orbit a star (in our case, the Sun), have enough mass to be spherical (hydrostatic equilibrium), and have cleared its orbit of other debris. Smaller celestial bodies in the solar system often lack the sufficient mass to clear their orbital path and may also not have a well - defined, dominant orbital behavior like planets.

Answer:

mass and orbital path