Select your answer:
Topics:
Bacterial Resistance and Biotechnology Anatomy and Physiology Enzymes Balanced Diet Medical Vocabulary Homeostasis and Disease Body Systems & Anatomical Terms Fish Health Management Diabetes Mellitus Bacteria, Viruses, and Fungi Biology for Engineers Advanced Stretching SM2 Weight Management Carbohydrates Bone, Spine, and Joint PathologyOther quiz:
Circulation and Excretion › ViewWhat type of excretory organs do insects and flatworms have?
A. protonephridia, metanephridia
B. Malpighian tubules, protonephridia
C. metanephridia, Malpighian tubules
Food and Nutrition › View
The table shows Reference Intakes for
11 year olds. Which nutrient do girls need more of than boys?
A. vitamin C
B. iron
C. energy
D. carbohydrate