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Black_prince [1.1K]
3 years ago
6

Why do the stars appear to be moving across the sky

Biology
2 answers:
Luba_88 [7]3 years ago
5 0

Stars appear to move across the sky at night because Earth spins on its axis and it is moving around the Sun. Because the Earth spins half a turn in a night, a star visible low in the east early in the evening will appear to rise and move in an arc across the southern sky and set in the west before morning. Stars in the center of the southern sky will disappear below the western horizon halfway through the night. Also, other stars will rise in the east all through the night. The stars that can be seen are always in the sky at some time during the day, but some rise while the sun is in the sky and are hidden by the glare of the bright sky.

Hope this helps!

Novosadov [1.4K]3 years ago
4 0

because the world is spinning at a different angle and speed as it its orbiting the sun.

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The lungfish Protopterus aethiopicus has a genome 38 times larger than that of humans. Most of the DNA in this species is noncod
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The country or culture we live in can largely influence what we consider to be a normal portion of food. what is the name of thi
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The culture of our country where we live can largely influenced by both symbolic and material elements. For is cultural ,not nutritional.

There is one most important things which we remember in connection with cultural factors involves in food portion of our daily life.Consist of values, attitude, habits and customs, acquired by learning all are starts by the starting experience of our childhood.

Food habits are largely influence by oldest and most deeply entrenched aspects of many culture. In many culture food has a social roles. Social and cultural factors to health programs in general. Culture also play an important role in human nutrition and must be considered in either clinical or public health intervention particular in immigrant population.

To learn more about human nutrition here

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8 0
1 year ago
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lesya692 [45]

Answer:

The environments in which cells grow often change rapidly. For example, cells may consume all of a particular food source and must utilize others. To survive in a changing world, cells evolved mechanisms for adjusting their biochemistry in response to signals indicating environmental change. The adjustments can take many forms, including changes in the activities of preexisting enzyme molecules, changes in the rates of synthesis of new enzyme molecules, and changes in membrane-transport processes.

Initially, the detection of environmental signals occurred inside cells. Chemicals that could pass into cells, either by diffusion through the cell membrane or by the action of transport proteins, and could bind directly to proteins inside the cell and modulate their activities.

7 0
3 years ago
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svetlana [45]

The correct answer is a substitution mutation.  

A mutation, which substitute’s one base for another, that is, a change in a solitary chemical letter like switching an A to a G is known as a substitution mutation. This kind of substitution can modify a codon to something, which encrypts a distinct amino acid and leads to a small modification in the generated protein.  


6 0
3 years ago
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