Answer: Directional selection occurs when individuals with traits on one side of the mean in their population survive better or reproduce more than those on the other. ... Directional selection does the “heavy lifting” of evolution by tending to move the trait mean toward the optimum for the environment.
➜ <u>Oxyhaemoglobin</u>.
➜ <u>Carboxyhaemoglobin</u> and as carbonic acid (CO2 dissolved in blood plasma).
The answer would be Biochemistry
Everywhere , but an example is: rain rusting an old car
Dale’s motor neurons carry instructions from his central nervous system to his muscles.
Motor neurons are special brain nerve cells that transmit impulses from the brain or spinal cord to a muscle or gland. The motor neurons functions with a network of other neurons, situated within the spinal cord and the brain. The two main subtypes of the motor neurons are; the upper motor neurons (which comes from the brain and connects with the lower motor neurons), and the lower motor neurons (which localize in the brainstem and the spinal cord).
