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Ymorist [56]
2 years ago
14

The andromeda galaxy is located approximately 2.5 million light- years from earth. Why is the light that reaches earth 2.5 milli

on years old?
Biology
1 answer:
Ivan2 years ago
5 0
So, the Sun's light takes about 8.3 minutes to reach us. This means that we always see the Sun as it was about 8.3 minutes ago. ... The nearest large galaxy to us, Andromeda, is 2.5 million light-years away. So, we see Andromeda as it was 2.5 million years in the past.
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Question 13 of 20:
IrinaK [193]

the following is formed when a group of tissues works together to perform a common function is called an Organ.

<h3>What is the definition of organs?</h3>

The word organ derives from the Latin term organum (instrument, tool). These structures are objects of physiology, the area of ​​biology that studies how organisms, systems, organs, cells and molecules perform chemical and physical functions in the body.

In this case, is correct to say that an organ is formed when a group of tissues works together to perform a common function.

See more about organ at brainly.com/question/12825206

#SPJ1

5 0
1 year ago
How is the law of conservation of mass applied to ecology?.
Fed [463]

Answer:

The law of conservation of mass states that the total amount of mass remains constant in a system. In ecology, this means that when an organism is eaten, its mass is conserved. Some of the organism’s mass is used to make new proteins, and some of it is passed as waste in the form of urine or feces.

Explanation:

6 0
1 year ago
After this one there's one more, Good luck! ​
kicyunya [14]

Answer:

-Your lungs are part of the respiratory system, a group of organs and tissues that work together to help you breathe. The respiratory system's main job is to move fresh air into your body while removing waste gases.

- When you inhale, air enters your lungs and oxygen from the air moves from your lungs to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled.

-The circulatory system delivers oxygen and nutrients to cells and takes away wastes.

-The heart is divided into four chambers consisting of two atria and two ventricles, the atria receive blood, while the ventricles pump blood. The right atrium receives blood from the superior and inferior vena cavas and the coronary sinus, blood then moves to the right ventricle where it is pumped to the lungs.

-Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body. From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart.

- Your blood is made up of liquid and solids. The liquid part, called plasma, is made of water, salts, and protein. Over half your  blood is plasma. The solid part of your blood contains red blood cells, white blood cells, and platelets.

:) hopefully this helps lol

Explanation:

6 0
2 years ago
Fossils can only be formed when?
Vesnalui [34]

Fossils can only be formed when mud, silt or tar is in the area to preserve the fossil, If erosion does not occur and allows the fossil to form, and Oxygen and microorganisms cannot decay the bones.

7 0
2 years ago
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What would cause an individual to have a mutation in all of their cells?
Stella [2.4K]

Answer: These changes can be caused by environmental factors such as ultraviolet radiation from the sun, or can occur if an error is made as DNA copies itself during cell division. Acquired mutations in somatic cells (cells other than sperm and egg cells) cannot be passed to the next generation.

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6 0
3 years ago
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