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cupoosta [38]
3 years ago
6

When Earth moves around the sun, there are small variations in the position of a star as observed from Earth. Which of these is

a method for finding accurately the distance from Earth to a star, by calculating these small variations?
Biology
1 answer:
MariettaO [177]3 years ago
8 0
<span>The answer should be The Parallax Method.</span>
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exhalation and inhalation of air is known as "cellular respiration".true or false correct false statement​
LiRa [457]

Answer:

False, it's simply respiration

Explanation:

cellular respiration is a long , complex process, where energy is released after complete metabolisation of the food inside the cell of an organism

4 0
3 years ago
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Describe how lymph nodes and organs help the immune system fight pathogens.
I am Lyosha [343]

The defense system of the human body is made up of entire organs and vessel systems like the lymph vessels, but also of individual cells and proteins. The inner and outer surfaces of the body are the first barriers against pathogens (germs). These surfaces include the skin and all mucous membranes, which form a kind of mechanical protective wall.

Several things support this protective wall:

<span><span>- The body’s own antibacterial substances can disable different pathogens from the environment at an early stage. A certain enzyme found in saliva, the airways and tear fluid destroys the cell walls of bacteria.
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- Many pathogens that are breathed in get stuck to mucus in the bronchi and are then moved out of the airways by hair-like structures called cilia.
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- Most pathogens that enter the body together with food are usually stopped by stomach acid.
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- Normal flora, harmless bacteria that reside on the skin and many mucous membranes in the body, also help to protect the body.</span></span>

The cough and sneeze reflex can also help to remove pathogens.


Hope this helps (:

4 0
3 years ago
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Who is Mendel? What did he study? Why was his research important
Eddi Din [679]

Answer:

Gregor Mendel was an Austrian monk who discovered the basic principles of heredity through experiments in his garden. Mendel's observations became the foundation of modern genetics and the study of heredity, and he is widely considered a pioneer in the field of genetics. He is known as the "father of modern genetics".

4 0
3 years ago
a comet is cruising through the solar system at a speed of 50,000 kilometers per hour for 4 hours time what is the total distanc
xeze [42]

50,000 x 4 = 200,000

7 0
3 years ago
Who spoke yo Samuel on The 4 occasion he was awoke
Katen [24]

Answer:

God

Explanation:

1. Went to Samuel

2. Samuel

3. Samuel told him to say( here I am lord speak to me

4. God

3 0
3 years ago
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