Answer:
Null hypothesis may be defined as the any type of assumption in which the observed difference between two sample in the statistical population is accidental. Null hypothesis is used in the field of genetics as well.
If one accepts the null hypothesis this means that there is no significant differences between the observed values and the expected values of the experiment. The rejection of null hypothesis explains that there may be significant difference between the expected value and observed value.
Answer: it is particularly rich in nutrients
Explanation:
The energy Earth receives off the sun is Solar radiation
Answer: It is a selective and differential medium.
Explanation: Selective medium is used to select the growth of certain bacteria whilst inhibiting the growth of another by preparing a medium with ingredients that will only select a specific growth of intended microbe. When closely related bacteria had been selected, they can further be differentiated by the way they utilize the medium. In this case staphylococcus aureus was first selected using sodium chloride with which only this bacteria can tolerate i.e halophilic (strives in salty environment). It was also further differentiated by its ability to ferment sugars changing the colour of the pH indicator chemical.
Answer:
The correct answer is C) Covalent bonds.
Explanation:
Water presents covalent polar bonds between oxygen and two hydrogens. This makes the molecule really strongly attached. Also the molecule presents a polarization where oxygen has two negative charges and each hydrogen has one positive charge so it's partially polarized but still the net charge is 0.
