Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

2. Cell Chemistry & Cell Components

Properties of Water- Density

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Properties of Water- Density

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Multiple Choice

Which of the following accurately relates the emergent properties of water to the effects of global warming in the Arctic?

Although it is feared that sea ice around Alaska and northern Canada may be greatly reduced by atmospheric warming, the high specific heat of water has so far buffered these sea ice communities from significant impacts.

An increase in water temperature due to global warming will cause the sea ice formed in the Arctic to be denser and less buoyant.

Although a significant increase of air temperature has occurred in the Arctic over the past 50 years, the specific heat of water has thus far buffered against any significant increases in the Arctic ocean temperatures.

Ice floats because it is less dense than liquid water; floating ice insulates water below and provides a habitat for some species. The significant increase in Arctic air temperature over the past 50 years is causing a reduction in sea ice, compromising these beneficial effects of sea ice.

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Verified step by step guidance

Understand the concept of emergent properties of water, particularly its high specific heat and density differences between ice and liquid water.

Recognize that the high specific heat of water means it can absorb a lot of heat without a significant change in temperature, which helps buffer ocean temperatures against rapid changes.

Identify that ice is less dense than liquid water, allowing it to float. This floating ice acts as an insulator for the water below and provides a habitat for various species.

Consider the impact of global warming, specifically the increase in air temperature in the Arctic, which leads to a reduction in sea ice.

Connect the reduction in sea ice due to increased air temperatures with the loss of insulation and habitat, highlighting the compromise of beneficial effects of sea ice in the Arctic ecosystem.