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svetlana [45]
3 years ago
8

Why does oxygen move from the alveoli into the pulmonary capillary blood?

Biology
1 answer:
notka56 [123]3 years ago
8 0
Partial pressure of oxygen inside the alveolus is higher than in pulmonary capillary vessels, that allows oxygen molecules to diffuse into the blood.  
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Unlike DNA, RNA is ___
Ratling [72]
The answer is B Single Stranded
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This geologic era is known as the age of aquatic plants and animals. a. Precambrian b. Mesozoic c. Cenozoic d. Paleozoic 2. Whic
prisoha [69]

Answer:

Option (D)

Explanation:

The Paleozoic Era refers to the time, from about 540 million years ago to 250 million years ago. During this era, there occurred drastic changes on earth. was a time of great change on Earth.

Life first originated in water, and with time the evolutionary process occurred and gave rise to the formation of numerous varieties of living species that dwelled in both the land as well as in water.

During this Paleozoic era, the primitive aquatic plants appeared, which were gradually widely spread over the large seas and oceans. There also occurred marine organisms such as trilobites, for the first time during the Cambrian period of the Paleozoic era. By the Ordovician period, these aquatic plants and animals were abundant, due to which it was commonly referred to as the age of aquatic plants and animals.

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The Paleozoic era most aptly describes the metamorphic rocks as mot of the metamorphic rocks found on earth belongs to this era.

Thus, the correct answer is option (D).

6 0
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