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MatroZZZ [7]
3 years ago
8

Coal was formed _________.

Biology
1 answer:
DedPeter [7]3 years ago
4 0

Answer:

A

Explanation:

A, the guy with 1 star provided the most noneducational response I've ever seen.

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A scientist performed an experiment on mice. Her results are posted below. Lung Cancer in Mice Experiment Group Duration of Ciga
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No; some mice may have developed lung cancer in less than 500 days of cigarette smoke exposure.

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3 years ago
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The descending pathway from the red nucleus to the lower motor neurons is the __________ tract.
m_a_m_a [10]

Descending tracts are the pathways by which motor signals are pass through from the brain to lower motor neurones. Thus, all the neurones within the descending motor system are classed as upper motor neurones. The lower motor neurones then directly innervate muscles to produce movement. Their cell bodies are found in the cerebral cortex or the brain stem, with their axons remaining within the CNS.

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3 years ago
The circulatory system consists of two divisions and is supplied with blood by different sides of the heart. The right heart sup
liq [111]

Answer:

pulmonary circuit,  systemic circuit

Explanation:

The circulatory system consists of 2 circuits -

pulmonary circuit

systemic circuit.                  

The pulmonary circuit carries deoxygenated blood. The right auricle receives the impure blood by superior and inferior vena cava, then the blood enters the right ventricle. From the right ventricle, the deoxygenated blood moves to the lungs by the pulmonary artery.

In the lungs, the deoxygenated blood gets oxygenated and enters the left ventricle through pulmonary veins. The pureblood then passes into the left ventricle and then the ventricle pumps the oxygenated blood to different parts of the body. This blood passes to the body aways from the heart by aorta. When the blood gets deoxygenated, it again enters the right auricle. In this way, double circulation occurs and both types of blood do not mix together.

8 0
3 years ago
An infant is brought to the clinic for his third diphtheria–tetanus toxoid–acellular pertussis vaccination (dtap). the mother re
Mumz [18]

The correct answer is administration of vaccination.  

DTaP refers to a vaccine, which assists the younger children below the age of 7 to develop immunity against the three dreadful ailments caused by bacteria, like tetanus, diphtheria, and whooping cough.  

Mild fever after the DTaP vaccine is not unusual, thus, the vaccination should not be withheld for that reason. However, vaccination can be withheld in case of previous anaphylactic sensitivity or reaction to a component in the vaccination.  


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3 years ago
Which 2 elements have the same number of valence electrons?
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Sodium and potassium
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