The Lyrid Meteor Shower Occurs Every Year on Approximately April

question 26

Multiple Choice

The Lyrid meteor shower occurs every year on approximately April 21 because

• A) the Lyrae constellation is directly overhead at midnight.
• B) Earth passes through a cloud of debris left behind by Comet Thatcher.
• C) Earth passes through a cloud of debris left over from the Solar System's formation.
• D) Earth undergoes a periodic volcanic eruption every April.
• E) the Sun is located in the Lyrae constellation at noon.

Recognize and understand the role of pacemaker cells and the conduction system in the heart.

Understand the physiological differences between the circulatory systems of mammals, fish, reptiles, and other vertebrates.

Grasp the concept of different heart conditions and their implications on the circulatory system.

Understand the impact of the autonomic nervous system on heart rate and function.

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