<span>The sequence is as follows:
c, d, a, b, f, g, e
The impulse starts at the SA node that has its own contraction rhythm (but can be faster or slower depending on other impulses or hormones). That impulse travels then through the atria and is slowed down by the atrioventricular septum except for a region in the right atrium called AV node where the impulse has continuity. The impulse travels then to the ventricles through the AV bundle. The impulse continues through bundle branches to other fibers: Purkinje fibers. These Purkinje fibers cause then a contraction that goes from the apex of the heart and rapidly through the ventricles.</span>
Answer:
lithosphere
Explanation:
Earth's lithosphere includes the crust and the uppermost mantle, which constitute the hard and rigid outer layer of the Earth. The lithosphere is subdivided into tectonic plates. Further there are two types of lithosphere mainly as oceanic and continental lithosphere.
Explanation:
The liver does many important things including: Makes bile, which helps carry away waste and break down fats in the small intestine during digestion. Makes certain proteins for blood plasma. Makes cholesterol and special proteins to help carry fats through the body.
Answer:
The answer is D) Fossil Evidence
Explanation:
Looking at creatures thousands of years old entrapped in fossils gives you the most solid evidence that things have changed greatly over time. Hope this helps :)
One way is that it add water to the atmosphere. Another way is that the trees and leafs provides the oxygen
