If the cystic fibrosis allele protects against tuberculosis the same way the sickle-cell allele protects against malaria, then which of the following should be true of a comparison between regions with and without tuberculosis? a. Cystic fibrosis deaths should be more common in regions with tuberculosis.
b. Cystic fibrosis deaths should be less common in regions with tuberculosis.
c. Cystic fibrosis deaths should be equally common in both types of regions.
d. Regional differences in the cystic fibrosis death rate should be purely random and unpredictable.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

the correct answer is c   with the systems

bc blah

explanation:

bc blah

the answer is c.) there is a warm front in region a and a stationary front in region b.