It is a wrong quote. Science is supposed to keep changing as we find new information and discover that our previous theories were wrong.
Answer:
Sample size is 50
Explanation:
The sample size simply refers to the number of samples in our dataset
In this question, we are dealing with a total of 50 students
So what this mean is that the number if samples which is our sample size is the number 50
Answer:
Species are as specific as you can get. It is the lowest and most strict level of classification of living things. The main criterion for an organism to be placed in a particular species is the ability to breed with other organisms of that same species.
A larger nucleus is generally less stable than a smaller nucleus because the electric force of repulsion between protons is a long range force, while the attractive strong nuclear force is short-range . Repulsion is therefore large for the large nuclei. To bring about more explanation; if an atom is small then its nucleus is also small, in small nucleus, the distances between nuclear particles are very, very small due to which the nuclear force of attraction is very large as compared to the electrostatic force of repulsion. Since the nuclear force of attraction is much greater than the electrostatic force of repulsion, so a small nucleus is very stable.
During respiration, the diaphragm moves upwards and returns to dome shape from the flattened shape before during expiration.
This movement of diaphragm can decrease the lung volume, increase the pressure inside and thus force the air out. This process is expiration.
However, if we breathe in again, which makes that inhalation, the diaphragm moves downwards into a flat shape so that it can increase the lung volume and thus we can breathe in as much air we can. This process is completely opposite from expiration.