I need help on this assignment pls (Please complete whole thing not just list a single link)

Biology

2 answers:

BARSIC [14]3 years ago

4 0

Explanation:

no its not understandably by reading aldo

Anna [14]3 years ago

4 0

Environmental damage (especially acid rain and global warming) resulting from the burning of nonrenewable fossil fuels. However, investing in renewable energy is controversial for several reasons. First, not all scientists agree on the degree of environmental damage that can be attributed to fossil fuels. Second, fossil fuels are relatively abundant and cheap energy sources, and have contributed significantly to economic growth. Abandoning inexpensive fossil fuels for more expensive renewable ones will have major economic ramifications. Your students will enjoy analyzing this interesting and controversial topic.
Learning Objectives
After completing this unit, students will:
1. Learn to examine an energy/environmental issue using a five-step, decision-making model.
2. Explain basic facts about various renewable energy sources.
3. Identify the advantages and disadvantages of renewable energy sources.
4. Explain basic economic concepts used to analyze energy issues.
5. Understand that public policy decisions involve trade-offs among social goals.
Unit Outline
I. II. III.
Facts about Renewable Energy Renewable Energy Vocabulary Teaching Activities
Teacher Instructions
Specific Activities
1. Renewable Energy Basics
2. Graphing Energy Facts
3. Trends in Research and Development (R & D) Spending
4. Energy Efficiency
5. Further Investigation
6. Debating the Issues
7. EEE Actions: You Can Make a Difference

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A) Aortic semilunar valve B) Mitral (bicuspid) valve C) Tricuspid valve D) Pulmonary semilunar valve 1) Prevents backflow into t

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Answer:

1. Aortic semilunar valve

2. Tricuspid valve

3. Mitral valve

4. Pulmonary semilunar valve

5. Mitral Valve

6. Tricuspid valve

Explanation:

The four heart valves of our heart have two main functions. They open to allow blood to pass through them, and close to prevent blood from going back (backflow).

Semilunar valves:

There are two semilunar valves and they have 3 cusps. They open up to areas outside the heart. Their main function is to prevent backflow towards the heart.

a. Aortic semilunar valve is located in between the Aorta and the left ventricle. It opens up to the Aorta where oxygen-rich blood leaves the heart and go towards the other parts of the body. It prevents backflow to the left ventricle.

b. Pulmonary semilunar valve is located in between the right ventricle and the pulmonary artery. It opens up to the pulmonary artery which carries unoxygenated blood towards the lungs. It prevents backflow to the right atrium.

Atrioventricular valves:

They are named as such because they are found in between the atria and the ventricles.

a. Tricuspid valve has three cusps and it is found on the right side of the heart. It is located in between the right atrium and the right ventricle. It prevents backflow to the right atrium.

b. Mitral valve has 2 cusps and that is why it is also known as the bicusip valve. It is located in between the left atrium and the left ventricle. It prevents backflow to the left atrium.

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Answer:

8 minutes and 20 seconds