Enzymes and antibodies have different functions, but both are types of

a) liquids.
b) proteins.
c) carbohydrates.

Which of these statements are true about scientific theories and hypothesis

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back

9. the history of life on earth is recorded in