Answer:
120 mm Hg
Explanation:
Given that,
Height = 8022 ft/2445 m
Atmospheric pressure = 570 mm Hg
In order to calculate the partial pressure of oxygen, at first, it is required to calculate the mole fraction of Oxygen.
Mole fraction of Oxygen = % of Oxygen in the air
= 20.95 % = 0.2095
Now, we know that,
⇒ Partial pressure of oxygen = Total pressure × mole fraction of Oxygen
= 570 × 0.2095
= 119.415 mm Hg
Therefore, the partial pressure of oxygen in Vail is approximately 120 mm Hg.
C) Active transport
Pinocytosis requires energy and thus is an example of active transport.
Answer: The extinction of dinosaurs will lead to increase in the prey which they used to consume before extinction.
Explanation:
Many years ago the dinosaurs used to dominate on earth as large mammals. They were plant eater herbivores and animal consumer carnivores. After the extinction of dinosaurs the ecological balance got disturbed. Flowering plants dominated the earth. The large and massive non-bird dinosaurs died but the bird like dinosaurs survived and they passed their traits to some lineages of modern birds.
Explanation:
If water did not expand when freezing, then it would be denser than liquid water when it froze; therefore it would sink and fill lakes or the ocean from bottom to top. Once the oceans filled with ice, life there would not be possible.
