What do physical changes do? alter the chemical structure of a substance becomes a new chemical substance increase the total mass of a substance affect the size, shape, and phase of a substance

The correct answer is D. Affect the size, shape, and phase of a substance

Explanation:

In chemistry, a physical change occurs when a substance changes its state, and other features such as color or size without changing its structure, composition or properties as it occurs in chemical changes that involve a change in composition or formation of new substances. An example of this is water that changes its state to gas if it reaches its boiling point or to ice if the temperature is reduced. However, this only changes the size, shape, and phase of water without altering its composition. Also, this change is reversible. This implies, physical changes only "affect the size, shape, and phase of a substance".

d.) the area was once ocean

answer

the most effective ways of dealing with and reducing stress could be; listening to relaxing music, yoga, aromatherapy and meditation

explanation

when stress is effectively managed, it the effect stress has on a person’s life so they can be productive, happy and healthier. it is vital to identify the source of stress to be able to manage it. some stress management tips are keeping a positive attitude, practicing relaxation techniques, exercising regularly and eating healthier.