Answer:
The cell membrane is semipermeable because it prevents harmful toxins from entering and damaging the cell. At the same time, the cell membrane allows nutrients and other helpful substances through. In this way, the cell membrane is like a security guard of the cell.
Explanation:
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Answer:
A tropical depression is a tropical cyclone that has maximum sustained surface winds (one-minute average) of 38 mph (33 knots) or less. A tropical storm is a tropical cyclone that has maximum sustained surface winds ranging from 39-73 mph (34 to 63 knots).
The entity integrity rule states that a primary key attribute can be null. Thus the statement is false.
<h3>What is an entity?</h3>
An entity is refer to any object that exists in reality. These entities are Independent in nature. Each row in a table should be a distinct entity, which is ensured by entity integrity.
The entity integrity rule states that a primary key attribute can not be null as it shows unique characteristics of an entity.No primary key value can be null according to the entity integrity constraint because it is needed to identify specific attribute values in relation.
Therefore, the statement is False.
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DSM-5 confuses the mental health community about the nature of mental psychology. The diagnosis do not solve the main problem of physicians. It's creation is a waste of effort and time because of its credibility to its information about new diagnosis of mental health disorders.
Eastern Europe wanted to be independent from the Soviet Union, but did not feel strong to oppose Soviet Union: only upon its collapse could they really become independent.
And Soviet Union did not support religion: so religious groups could function more in the open after the collapse of the Soviet Union.
