The maximum volume of air that can more in and out during one respiratory cycle is called the .
a. vital volume
b. working volume
c. total capacity
d. working capacity
e. vital capacity

Which of the following lines of evidence would best support your assertion that a particular plant is an angiosperm? a) it produces seeds. b) it retains its fertilized egg within its archaegonium. c) it lacks gametangia. d) it undergoes alternation of generations.

What are charcteristics of lithosphere?

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?