Why should you never join a gym the first time you visit?
a. you risk picking up a bacterial infection from unclean equipment.
b. you need time to assess the facilities and the price of the membership.

Which many - celled organisms are capable of causing diseases in humans

When comparing the digestive and urinary system, we can conclude that they both

Protein deficiency can result in a malfunctioning metabolism, a weak or irregular immune system, and possible blindness and deafness a rapid period of weight loss a significant and rapid weight gain damage to connective tissue and bones