The statement which is true is as follows:
- As evidence changes, scientific theories can also change.
Thus, the correct option is A.
<h3>What is Scientific theory?</h3>
A Scientific theory may be characterized as a well-determined description of some features of the natural world, based on a body of certainty that has been repeatedly assured through observation and experiment.
Scientific theories describe the natural world, while scientific law explains natural phenomena. It is not assumed that if a single study or inference is wrong, a scientific theory can be invalidated. It undergoes a series of protocols before rejection.
As evidence is modified or changed, the scientific theories can also be altered on the basis of it.
Therefore, the correct option for is question is A.
To learn more about Scientific theories, refer to the link:
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<span>The Cell Membrane. All living cells and many of the tiny organelles internal to cells are bounded by thin membranes. These membranes are composed primarily of phospholipids and proteins and are typically described as phospholipid bi-layers.</span>
If a chromatographic column is not placed in a vertical position, the flow and the separation rate of the materials which are been separated may be negatively affected, that is, it may be slowed down, this is because the column is not inclined in the same direction as the flow of the separating substances. Also, collecting the products of the separation will be a bit difficult. If the column is placed in a vertical position, then a test tube can be placed at the end of the column for collecting the separated product
Answer:
upwelling is the process allows cold ocean water rich in nutrients to rise to the surface
