Answer:
<h3>
Constant movement around the sun</h3>
Explanation:
We have different seasons because of the earth’s constant movement around the sun. The closer a place on earth is to the sun, the warmer it will be. The farther away it is, the colder it will be.
<h3>Brainiest?</h3>
C. Energy can be neither created nor destroyed
Answer:
La principal diferencia que hay entre un espermatozoide y una célula de nuestro pelo es que el espermatozoide corresponde a una célula reproductiva haploide que contiene sólo la mitad del material genético del organismo mientras que las células en nuestro cabello tienen el material genético completo.
Explanation:
The type of microscope which would be the best tool to use to view the surface of a bacterial cell is a Scanning electron microscope.
This is because it can be used to look at the surface of objects at high resolution. Maximum magnification: Approximately 500,000x. Best for: Looking at surfaces of objects
<h3>What is a Microscope?</h3>
This refers to an optical instrument that is used for viewing very small objects and can be magnified several hundred times.
The type of microscope which would be the best tool to use to view the surface of a bacterial cell is a Scanning electron microscope.
This is because it can be used to look at the surface of objects at high resolution. Maximum magnification: Approximately 500,000x. Best for: Looking at surfaces of objects
Hence, we can see that your question is incomplete, so a general overview was given to you, and only the last question was answered.
Read more about microscopes here:
brainly.com/question/543989
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Answer:
My pretest behaviors were triggered by the sympathetic nervous system, while my body returned to its normal state by the way of the parasympathetic nervous system, after the test.
Explanation:
The sympathetic nervous system and the parasympathetic nervous system are part of the autonomic nervous system. The main function of the autonomic nervous system is to regulate the heart, kidneys, and liver which are not under voluntary control. The regulation of the body’s unconscious actions is executed through the sympathetic and the parasympathetic nervous system.
Upon exposure to stressors or threats, the sympathetic nervous system is triggered. Epinephrine and norepinephrine are then released, causing acceleration of the heart, constriction of blood vessels, increase in blood pressure, profuse sweating and other related responses against stress. The sympathetic nervous system controls all these involuntary responses that could be termed “fight-flight-or-freeze” response.
On the other hand, the parasympathetic nervous system initiates what is termed “rest and digest” response, which occurs immediately after the “fight-flight-or-freeze” phase response to stress is over. The body is returned to its normal state by the parasympathetic nervous system. The parasympathetic nervous system releases acetylcholine, which regulates the function of the body during a period of rest or recuperation.
