when birds migrate in to or out of a defined population and mate with birds from another population the existing pool of genes may be altered migration can increase or decrease gene frequencies in population resulting in...

Evolution is defined as genetic changes in a population over multiple generations. A(n) does not evolve because allele do not change; however, a(n) can evolve because allele frequencies can change

When the ball is rising up, it gains kinetic energy. when the ball reaches the very top, it will have all potential energy, until it falls back down and gains it kinetic energy. finally when you catch the ball or it falls back down, it would have gained its potential energy back.

The need activity of the nurse is to suction discharges from the trachea. current treatment approaches in the pressing consideration facilities or crisis offices are corticosteroids and nebulized epinephrine; steroids have demonstrated advantageous in extreme, direct, and even gentle croup. in the clear instances of croup, anti-microbials are not endorsed, as the etiology is viral