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tankabanditka [31]
3 years ago
8

Which statement best explains why earths outer core is in liquid form?

Biology
1 answer:
Marizza181 [45]3 years ago
5 0
The iron-nickel alloy melts cause of the hot temperatures
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Which event signals the birth of a star?
juin [17]

Answer:

nuclear fusion

Explanation:

When the density and temperature at the core of the gravitationally collapsing nebula reaches values when nuclear fusion is triggered and sustained, that marks the birth of the star.

7 0
3 years ago
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Research indicates that ibuprofen a drug used to relieve inflammation and pain is a mixture of two enantiomers that is molecules
sergeinik [125]
<span>Are mirror images of one another
  in science, an enantiomer, otherwise called an optical isomer, where you have two stereoisomers that are perfect representations of each other that are non-superimposable , much as one's left and right hands are the same aside from being turned around along one pivot.</span>
5 0
3 years ago
Of the following examples, which is likely to contain plasma?
-BARSIC- [3]

Answer:

Lightning

Explanation:

The term plasma referred to that condition when the electrons are "freed" from their host atoms for a short time. It happens due to the high temperatures.

Lightning is a plasma because when a column of electrons moves from sky to ground, the air that it passes through lights up with energy. What we see as lightning is the air. In this air,  the electrons are excited and giving off light. We see it as a light.

From this brief discussion, we can say that as electrons become free and become excited and then give light, lighting is a plasma.

5 0
3 years ago
List the negative impacts of human activities on vegetation?​
scoundrel [369]

Answer:

Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. These negative impacts can affect human behavior and can prompt mass migrations or battles over clean water.  

Explanation:

6 0
2 years ago
In what kind of envionment would you expect to find organisms that carry out fermentation
alexandr402 [8]
<span>in an environment where there is little or no oxygen. aerobic respiration requires oxygen ad when it is not present fermentaion (anaerobic respiration) occurs because it works when oxygen isn't there</span>
7 0
3 years ago
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