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Shtirlitz [24]
3 years ago
8

How is it possible for white dwarfs to have a lower luminosity than the sun even though it is much cooler?

Biology
1 answer:
ratelena [41]3 years ago
4 0

Answer:

White dwarfs have an extremely small surface area to radiate this heat from, so they cool gradually, remaining hot for a long time.

Explanation:

As a white dwarf cools, its surface temperature decreases, the radiation which it emits reddens, and its luminosity decreases.

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The instructions, or 'code', in our DNA is dependent upon the order of the _____ in the DNA
dsp73

Answer:

C. Bases

Explanation:

Deoxyribonucleic acid, commonly known as DNA, is the a type of nucleic acid that serves as the genetic material in living organisms. DNA holds information or instructions needed for the synthesis of useful products like proteins that is responsible for growth, reproduction, and general survival of organisms. Hence, it is referred to as the "BLUEPRINT OF LIFE".

However, in the structure the of the DNA molecule, it contains certain monomeric building blocks called NUCLEOTIDES. These nucleotide bases are of four types namely: Adenine, Thymine, Guanine and Cytosine. It is upon these order of nucleotide bases that instructions, or 'code', in our DNA is dependent upon.

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3 years ago
What is the main advantage to using satellites to measure climate change?
alexgriva [62]

Answer:

What is the main advantage to using satellites to measure climate change?

Explanation:

answer A...Satellites in a low earth orbit can directly monitor the climate from their position within or just above the atmosphere, and can provide near-global coverage as they scan over different swathes of ground with each orbit.

4 0
3 years ago
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EARTH'S HISTORY
scoundrel [369]

Answer:

Around 100,000 years ago, the Earth was going through a period of Ice Age. While the Glacial Period was not in full effect, it is reasonably concluded by researching the ending of the Ice Age and other Glacial Periods that the Earth was considerably colder than it is right now.

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6 0
3 years ago
Which substance can enter a cell by diffusion
lara [203]
Answer;
The substance that can enter a cell by diffusion without having to be digested is water.

Explanation;
Diffusion involves the movement of molecules from a region of high concentration to a region of low concentration, down a concentration gradient.
Water is able to diffuse through the cell membrane without being digested since it has small molecules.
One property of cell membrane is semi-permeability; it selectively allows material to enter or leave the cell. Large molecules such as starch , fat and proteins, can not enter the cell due to their size and will need to be digested to small molecules for the to gain access to the cell. 
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3 years ago
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Is homeostasis only considered the process of maintaining a constant or stable internal temperature?
olga55 [171]

Answer: Homeostasis refers to the body’s ability to maintain a stable internal environment.

Explanation: Maintaining homeostasis requires that the body continuously monitors its internal conditions.

Hope this helped! :)

4 0
3 years ago
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