Most of the information of the interior
Most of the information about the composition of the earth
A: The stomach is actually J shaped and resembled early wine pouches.
Answer:
The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.
Pathogens are harmful because they are tiny organisms like a bacterium, a fungi, or a virus that causes people to be sick. It causes diseases like the rhinovirus which is the cause of common cold. It is commonly found in hospital wastes and even the water used in swimming.
Answer:
The correct answer is- secondary treatment
Explanation:
Wastewater treatment is divided into three main stages which are primary, secondary and tertiary stages. In the primary treatment, the wastewater is held in the settling tank for some time and the solid waste settles with time and the remaining liquid is passed for secondary treatment.
In the secondary treatment, the organic compound present in the liquid is degraded with the help of aerobic bacteria. Aeration tank is there for providing the oxygen to bacteria and wastewater is stirred so that oxygen can be distributed evenly and bacteria can do their work properly.
