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Fed [463]
3 years ago
8

In reference to the electrical activity of the heart, what signals the end of the cardiac cycle

Biology
1 answer:
Lelu [443]3 years ago
3 0

Answer:

The electrical impulse travels from the sinus node to the atrioventricular node (also called AV node). There, impulses are slowed down for a very short period, then continue down the conduction pathway via the bundle of His into the ventricles.

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7 0
3 years ago
What are the chemical origins of life?​
Studentka2010 [4]

Answer:

(Hope this helps can I pls have brainlist (crown)

Explanation:

The chemical genesis of life refers to the circumstances that may have existed, allowing the earliest replicating living forms to emerge. It examines the physical and chemical processes that might have resulted in the formation of early replicator molecules.

Only four elements make up around 96 percent of the mass of the human body: oxygen, carbon, hydrogen, and nitrogen, with water accounting for the majority of this.

The chemical genesis of life refers to the circumstances that may have existed, allowing the earliest replicating living forms to emerge. It examines the physical and chemical processes that might have resulted in the formation of early replicator molecules.

6 0
3 years ago
WILL GIVE A BRAINLEST
Nina [5.8K]
Oxides.

some of them are
sulfur dioxide (SO2)
carbon monoxide (CO)
nitrogen oxides (NOx)
4 0
4 years ago
LOTS OF POINTS HELPP
Alex777 [14]

The skeletal system stores most of the body's calcium. The skeletal system includes bones and teeth. Small portions of  calcium are stored inside blood and muscles, yet they aren't <em>used </em>to store calcium. This means that the answer is C. Skeletal system.

Hope this helped!

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7 0
4 years ago
Read 2 more answers
Where on the track is the most potential energy?
vovangra [49]
The correct answer is a. Position a has the most potential energy. hope this helps
5 0
3 years ago
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