Which of the following is not a physical change?

dissolving salt in water

baking a cake

melting wax

freezing water

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion