The Human Respiratory system.
Answer:
there are all kinds of signals occur in the brain
Explanation:
Hope this help not sure if it is the right answer
Answer: Directional selection
Explanation:
In the population genetics, directional selection is the mode of selection during which the extreme phenotype are favored more than the other phenotype.
This causes the allele frequency to shift towards the time in the direction of that particular phenotype.
Here, in the question the acid tolerant plant species is favored over the other phenotype.
Hence, the correct answer is option D
Be friendly at first with whomever you like, it is easier to get that person as a girlfriend if you have common groind; a friendship so it will be less akward for the both of you then slowly show her things that you like her be able to make her laugh but dont try to hard talk about her to your friends but not on no weird stuff then slowly make your moves like hand holding huggin kisses on the cheek there fore and so on and be protective over her but not possesive you know just show her you care
<span>The water moves up and down which is disturbance, and that travels in a wave transferring energy.
I hope I helped.</span>