The important gases, carbon dioxide and oxygen, enter and leave the leaf through the
A. upper epidermis
D. guard cells
Topics:Medicine on the Western Front Deficiency Diseases Circulation of Blood Biodiversity Conservation Living Organisms & Animal Behaviors Carbohydrates Vocabulary Aseptic Technique & Sterile Comp Review Human Body Systems The Nervous System and The Senses Deficiency Disease Homeostasis, Nutrition, Digestion & Absorption Homeostasis and Disease Healthy Living Vocabulary CABG Surgery
Other quiz: Health Care
Assisted living residences provide skilled nursing care to persons no longer able to live in their own homes.