What do the moon and sun have in common

They are locked together in stable orbits due to gravity - All have gravity -  All of them are in the Milky Way -  The Moon orbits the Earth, the Earth orbits the Sun - Because they appear to be the same size in the sky, the Sun, Earth and Moon work together to create eclipses - Earth depends on both the Sun and the moon for life as humans know it to exist.

Explanation:

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.