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?
1. cystic fibrosis deaths should be more common in regions with tuberculosis.
2. cystic fibrosis deaths should be less common in regions with tuberculosis.
3. cystic fibrosis deaths should be equally common in both types of regions.
4. regional differences in the cystic fibrosis death rate should be purely random and unpredictable.

i believe the answer is c

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

it’s lava came from an explosive eruption

the answer is c most of the fortnite players usually buy v bucks to get the battle pass and other cosmetics but some players who are referred to as "no skins" don't   buy skins and are usually noobs.

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