What type of star is in the middle of the brightness scale but is cool

Which best explains how this maneuver unblock a person's airway?

Environmental impacts on evolution : mastery test

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only