The immune system tries to stop invasions by foreign agents by either killing cells directly or by

a. creating an unstable environment.
b. erecting mucous membranes.
c. reallocating critical functions.
d. flushing the foreign bodies out.

Want free brainliest and free points? answer this drivers ed question and i got you! when turning left, watch for who are frequently struck by left-turning vehicles. a. bicyclists b. motorcyclists c. large trucks d. pedestrians

The probability of rolling a sum of 7 when rolling two dice simultaneously is 0.167. you decide to test that probability by rolling th dice 12 times. what is the probability that exactly 2 of the rolls is a sum of 7?

Without stratospheric ozone, which of the following would most likely occur? i. smog over major cities would be greatly reduced. ii. farms would produce surplus crops because of increased photosynthesis. iii. uv radiation would damage phytoplankton and reduce populations of aquatic consumers. i only ii only iii only i and ii i and iii