Alfred Wegener believed that mountains were created because Earth was cooling down and shrunk. This was thought to construct "folds" or mountains in the Earth's crust if the concept was right. But, mountains would be layout evenly above the Earth's surface.
<span>An environmental factor that causes a population to decrease is death</span>
Answer:
sprint runners rely on lactic acid fermentation as there main source of energy,printing takes a lot of effort and a lot of big movements and a lot energy on demand . cellular respiration makes ATP at a slower rate than lactic fermentation therefore it is anaerobic
Explanation:
the sprinter uses ATP already in muscles as well as ATP produced by lactic acid fermentation. A long-distance runner gets its ATP solely off of cellular respiration
hope this helps
Answer: E. When one contracts, the other relaxes and this allows the bones to move; triceps and biceps.
Explanation:
Antagonistic action occurs between the two pairs of muscles. In this action one muscle while contracts other muscle relaxes. The example of antagonistic pair is of biceps and triceps. The triceps remain in the relax phase while the biceps contracts so as to lift the arm.
The two sides of a nerve cell membrane have unequally distributed ions ( Na+ and K+). Sodium is inside, while potassium is outside. Carriers actively transport them. This active transport mechanism is called Sodium-Potassium Pump. Without stimulus, sodium channels are closed while some of the potassium channels are open.
Stimulus (depolarization) will cause the sodium channels to briefly open and the positively-charged ion diffuses into the nerve cell. The membrane potential becomes positive. The potassium channels open and positively-charged potassium diffuse out. With respect to the outside, the inside will become less positive again.
