Name types of Muscle ?

There is cardiac, smooth and skeletal muscle.

Explanation:

Cardiac muscles are the ones in your heart, they are involuntary and need to be strong. Smooth muscles are found in other organs, and they too are involuntary. Skeletal muscle are attached to your skeletal system, so when you contract or relax them you can move your body.

genetic variation will increase because of a new habitat and food source.

explanation:

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.