Suppose a population is carrying a condition controlled by two alleles: r (dominant) and r (recessive). if the frequency of the r allele is 15%, and the frequency of the r allele is 85%, what will be the frequency of the rr genotype, assuming evolution is not occurring?

what's the

what school and grade?

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.