Select the correct answer. Mutations in certain genes of bacteria cause them to be resistant to powerful antibiotics. What type of mutation is this for the bacteria?
A.
beneficial
B.
harmful
C.
neutral
D.
both beneficial and harmful

Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.

Which beat describes the brain stem

The response is the basis for vaccination. primary secondary tertiary none of the above