No student devices needed. Know more
15 questions
True or false? Insects do not have a backbone.
True
False
The opposite phase of vaporization is _________________________.
sublimation
freezing
melting
condensation
Which of the following does sound travel fastest in?
solid
liquid
gas
The gastric juices in your stomach can burn through your skin.
True
False
How much saliva do we produce in each day?
about a gallon
about 2 liters
about 1 liter
about 20 ml
The system that recognizes and attacks foreign substances is known as the _________________________.
integumentary system
immune system
digestive system
nervous system
Explore all questions with a free account