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Xelga [282]
2 years ago
6

What is testable explanation for a natural phenomenon

Biology
1 answer:
bazaltina [42]2 years ago
5 0
The answer is a hypothesis Natural phenomena are those that occur or manifest without human input.
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The abbreviation of the term that means pertaining to the back and to the front is:_________
Burka [1]

Answer:

PA

posteroanterior

Explanation:

3 0
2 years ago
Name and describe each star phase.
Inessa [10]
(A nebula)
is a cloud of gas (hydrogen) and dust in space. Nebulae are the birthplace biths. There are different types of nebula. An Emission Nebubla such as Orion nebula, glows brightly because the gas in it is energised by the stars that have already formed within it. 

(A star)
is a luminous globe of gas producing its own heat and light by nuclear reactions (nuclear fusion). They are born from nebulae and consist mostly of hydrogen and helium gas. 

(red giant)
This is a large bright star with a cool surface. It is formed during the later stages of the evolution of a star like the Sun, as it runs
out of hydrogen fuel at its centre.

(red dwarf)
These are very cool, faint and small stars, approximately one tenth the mass and diameter of the Sun. They burn very slowly and have estimated lifetimes of 100 billion years. 

(white dwarf)
This is very small, hot star, the last stage in the life cycle of a star like the Sun. White dwarfs have a mass similar to that of the Sun, but only 1% of the Sun's diameter; approximately the diameter of the Earth. 

(Black holes)
are believed to form from massive stars at the end of their life times. The gravitational pull in a black hole is so great that nothing can escape from it, not even light. The density of matter in a black hole cannot be measured.
8 0
2 years ago
NO LINKS I WILL REPORT U
alexandr402 [8]

Answer:

Both of these are correct

moves constantly between Earth's surface and the atmosphere

and it is matter that is essential for life

4 0
2 years ago
Read 2 more answers
What is the most likely effect of the increase in carbon dioxide levels in the atmosphere
pogonyaev
Deforestation because without trees and plants, they are nothing to convert CO2 into Oxygen. 
4 0
3 years ago
Where would the leucine side chain most likely be found in a protein dissolved in water?
riadik2000 [5.3K]

Answer:

Burried in protein

Explanation:

Leucine have a branched hydrocarbon side chain. The side chain of leucine is nonpolar and hydrophobic.

If a protein have to face water, proteins fold in such a way during the tertiary structure that the amino acid with polar characteristics tend to remain on outer surface while amino acid with nonpolar characteristics tend to remain in the core of protein.

So Leucine side chain would be found burried in core of protein.

5 0
3 years ago
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