Which describes the interaction?
Two abiotic factors are interacting,
Two biotic factors are interacting,
The tree is abiotic and is interacting with a biotic factor.
The tree is biotic and is interacting with an abiotic factor.

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium