Since an animal only becomes more complex, and not simpler, an ancestor to all organisms would have to be the most simple and primitive organism.
Answer:
33.3
Explanation:
Normally there are 4000 to 11000 WBCs in a microliter of blood averaging almost 7500. While there are 150,000 to 350,000 platelets in a microliter blood of a normal person averaging almost 250,000. Thus the ratio can be as 250,000 :7500 resulting in 33.3. If a range is to be given, it ranges from 31.8 to 37.5 per microliter of blood.
Answer:
The answer is b. transpiration
Explanation:
The flu is a viral disease.
Cholera is a bacterial disease in the small intestine.
Measles is a viral disease.
The common cold is a viral disease.
Cholera is the only bacterial disease in this list.
D. 2H₂O ⇄ H₃O⁺ + OH⁻
H₂O⁺ is known as the hydronium cation and OH⁻ is known as the hydroxide anion.
