According to a national survey of asthma: On June 30, 2010, the number of residents of Florida who had been diagnosed with asthma at any time during their life was X. The population on June 30, 2010, was Y. During the same year, the number of new cases of asthma was Z. The point prevalence of asthma on June 30, 2010, using the midpoint population (population on June 30, 2010) as the denominator would be expressed as:a) (X/Y) × 100b) (Z/X) × 100c) (Z/Y) × 100d) (X*Z) x 100

a) (X/Y) * 100

Step-by-step explanation:

In this case, the relevant data would be the number of Florida residents who had been diagnosed with asthma at any time in their life (which would be X) and the population of Florida (which would be Y).

Therefore to know the% of diagnosed or the point prevalence of asthma, it is necessary to divide X / Y, because X is the specific and Y would be the general. Therefore, the answer is a) (X/Y) * 100

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.