Answer: B boiling point
Explanation: To determine the mixture what given component is separated out from the mixture by its boiling point.
between selfish and selfless impulses.
mark brainliest :)
This paragraph represents desert.
<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>you</em><em>.</em>
Answer: The frequency of brown beetles is 0.32.
Explanation: The frequency of A1 allele is 0.8. As p+q=1, or the sum of dominant and recessive frequencies equals 1 or 100%:
1 - 0.8 = 0.2
In Hardy-Weinberg principle,

2pq represents the frequency of heterozygote individuals, so:
genotype A1A2 = 2*0.8*0.2 = 0.32.
Thus, the frequency of brown beetles (A1A2) in the population is 0.32.
Smoking ruins your lungs making it harder to breath and get oxygen
you need oxygen when you exercise so you don't faint
smokers get less so it is harder for them, its like trying to exercise while breathing through a sponge or a straw os