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belka [17]
2 years ago
9

What is our atmosphere?

Biology
1 answer:
tangare [24]2 years ago
5 0

Answer:our atmosphere is  78% nitrogen, 21% oxygen, 0.9% argon, and 0.03% carbon dioxide with very small percentages of other elements. Our atmosphere also contains water vapor. In addition, Earth's atmosphere contains traces of dust particles, pollen, plant grains and other solid particles.

Explanation:

hope it helped

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Why is pcr used in the process of dna sequencing?
Vika [28.1K]
PCR allows for the analysis of DNA fragments through the comparison of the base pairs each molecule contains, which can then be used for genetic screening and the identification of individuals and DNA fragments
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2 years ago
Order the steps to take when drawing electron dot diagrams.
Lemur [1.5K]

Answer:

Order the steps to take when drawing electron dot diagrams.

Count the dots to make sure that all of the valence electrons are represented.  

✔ 4

Draw dots around the chemical symbol to represent the valence electrons of the atom.  

✔ 3

Use the periodic table to find the chemical symbol of the atom and the number of electrons in the valence shell.  

✔ 1

Write the chemical symbol of the atom.  

✔ 2

Explanation:

I did it on Egde I guess on the answers BTW just to help you guys

7 0
2 years ago
Ryan hears a loud noise and quickly turns his eyes sideways in the direction of the sound. To accomplish this action he must use
maksim [4K]

Answer:

The correct answer is lateral rectus muscles.

Explanation:

To see what is happening in his side, or what originated the loud noise, Ryan has to use his lateral rectus muscle. Lateral rectus is one of the five extra ocular muscles that help in movement of the eye balls and help to see what is happening in and around us. It is mostly responsible for abduction, i.e. the movement of the eye balls away from the center line of the body. Defect in this muscle can result in sixth nerve palsy.

7 0
3 years ago
Which of these statements is correct regarding the location of glycolysis and cell respiration
denis-greek [22]

Glycolysis takes place in the cytoplasm. Cellular respiration takes place in the mitochondria.

3 0
2 years ago
La sangre sale del ventrículo derecho por las arterias pulmonares y se dirige a los pulmones.
AveGali [126]

Answer:

Si, esto es lo que se conoce como circulacion menor.

Explanation:

La sangre cumple un recorrido en el corazon a la cual se la llama circulacion mayor, una vez que se continua su camino hacia los pulmones ahi ya pasa a ser circulacion sanguinea menor.

Estas circulaciones estan sumamente coordinadas y tienen un orden ritmico, con un unico fin, que es oxigenar la sangre que se recolecta de todo el organismo.

Es asi como la sangre que viene con CO2 entra a los pulmones posterior a la eyeccion cardiaca y cumple con el proceso de homeostasis en el alveolo y se oxigena.

4 0
3 years ago
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