Compare and contrast the benefits and effects of running and walking.

Compare and contrast the benefits and effects of running and walking. Running and walking both do not require special equipment and can be done anywhere. Running burns 600 calories per hour, while walking burns 300 calories per hour. Running has a higher impact on joints than walking does.

Explanation:

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates