<span>A. response to a stimulus</span>
1.A smokers will be black or almost tar like while a non-smokers will be a light pink color
Enzymes as they are biological catalysts
Answer:
<h2>B
</h2>
Explanation:
1. Amphibian's heart is three-chambered from which two are atria and only one is ventricle.
2. And there is two circulatory pathways having different routes.
3.There is mixing of oxygenated and deoxygenated blood in case of amphibians.
4. And in case of mammals there is no mixing of blood,, both the oxygenated and deoxygenated blood is completely separate.
5. Mammal's heart contain four chambers from which two are atria and two are ventricle, and they completely separate both the oxygenated and deoxygenated blood.
Answer: blood volume increases arterial pressure blood pressure fluid Renin by itself does not really affect blood pressure. Instead, it floats around and converts inactive forms of angiotensin into angiotensin I.
Explanation:
