The idea that "students ' immune systems have declined due to the use of hand sanitizers " is a hypothesis.
The term hypothesis refers to an intelligent guess or idea often based which is subject to scientific investigation via experiments.
A hypothesis may be right or wrong. We can only prove a hypothesis by subjecting it to a series of rigorous experiments.
Thus Collette's idea is a hypothesis.
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Metamorphism occurs because some minerals are stable only under certain conditions of pressure and temperature. When pressure and temperature change, chemical reactions occur to cause the minerals in the rock to change to an assemblage that is stable at the new pressure and temperature conditions.
It means that the person has gotten two types of the same allele from each parent. ... If there is only one recessive allele that is received from one parent, then it will not manifest through the person but the person will also become a carrier.
Answer : The total electric charge of electrons is, 
Explanation:
Answer : The number of electrons transferred are, 
Explanation :
First we have to calculate the number of electrons.
Number of electrons = 
Mass of 1 electron = 
Total mass of electron = 2.5 kg
Number of electrons = 
Number of electrons = 
Now we have to calculate the total electric charge of electrons.
Formula used :
where,
n = number of electrons transferred =
Q = charge on electrons = ?
e = charge on 1 electron = 
Now put all the given values in the above formula, we get:
Thus, the total electric charge of electrons is,
