"1. what changes were observed after the volunteer exercised? "

The expiratory flow peaks this measurement with an instrument called the Peak Flow Meter. the Peak Flow test makes the difference between an asthma attack and a sluggishness. For people who suffer from asthma, it allows them to see if their treatments are effective or not.

- A teenager measuring 1.45 m has a theoretical DEP of 350 L / min.

- A 30-year-old woman measuring 1.60 m has a theoretical DEP of 490 L / min.

- A 50-year-old man measuring 1.80 m has a theoretical DEP of 620 L / min.

We do not have information on the patient, but there is a decrease in peak expiratory flow after exercise, a decrease of more than 20% compared to normal, it means that we are asthmatic or in crisis asthma.

the genotypes would be 50% bb and 50% bb

the phenotypes would be 50% brown and 50% white. hope this : )

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.