Answer;
Open system; can exchange both matter and energy; An example is a living organism such as human being, we actively interact with environment, which results in changes to both the environment and human being, for instance we eat to acquire energy.
Closed system; can exchange energy but not matter; An example is a saucepan, t<span>he saucepan allows energy transfer as the saucepan heats up and heats the contents inside it, putting a lid on it, prevents matter from entering and becomes a closed system.</span>
Isolated system; Can exchange neither energy nor matter. For example is a thermos. if tea is poured into a thermos or an insulated container there is no exchange of heat or matter.
Muscle spasms<span>Hypocalcemia can cause
emotional disturbances
depression of the nervous system
muscle weakness
sluggish reflexes
muscle spasms</span>
The Answer is ground tissue .hope I helped
Harmful because they change how the genes are supposed to form and they can give disorders at times.
