Q: What term means a failure, insufficiency, or delay in the response of the immune system, which may be acquired or inherited? Choices: - anemia - pathogenic - vitamin deficiency - immunodeficiency A:
immunodeficiency

Q: What is the disease in which cells grow out of control and form abnormal masses? Choices: - bronchitis - diabetes - HIV - cancer A:
cancer

Q: The presence of what makes soil hold together more tightly and enables it to hold more water? Choices: - sand - salt - glass - clay A:
clay