Answer:
(B) Preoperational
Explanation:
The theory developed by the famous psychologist Jean Piaget, about the preoperational stage, describes the characteristics of reasoning during a person's age. More specifically, it is the phase of cognitive development that the child goes through between 2 and 7 years.
Answer:
B
Explanation:
In a pure command economy, there is no private sector, as the central government owns or controls all business.
WORK
CITY PLANNING
<span>In the 19th century, the population continued to grow unabated, doubling between 1801 and the 1820's and then doubling again between then and 1851, to 400,000 souls. This was phenomenal growth transforming Manchester into Britain’s second city. Manchester continued to grow steadily down to the end of the century. </span>
WORK- <span>Young men and women poured in from the countryside, eager to find work in the new factories and mills. The mills paid relatively high wages and they also employed large numbers of children. As a consequence, families migrating to the city often saw a considerable rise in their incomes. But not all aspects of life in the factories were pleasant. The rise in child labour was of course undesirable from the perspective of child welfare.
CITY PLANNING- </span>Better wages were undoubtedly the greatest attraction of city life, but the higher incomes came at a price. City planning was in its infancy and much of the new workers’ housing was erected with little regard to quality.
<span>planning of cities jewelry pottery Sanskrit religious art temples paintings sculptures stories plays poetry metal lurgy-the art of working with metal knew how to make alloysHindu-Arabic Numerals (still in use today)medicine inoculation-putting a small dose of a virus into someone to build a defense to disease <span>astronomy</span></span>
Answer:
The water quality is deteriorated as there is depletion in Oxygen O₂.
Yes, the activity of the yeast has precluded the usage of the water
Explanation:
Here, we note that the addition of more or fewer drops of Reagent D sodium hydroxide (NaOH) is required to get the same blue color as in Phase 1 where no yeast is added indicates the level of O₂ in the water as the amount of O₂ concentration in the solution is directly proportional to the amount of Reagent D required to reach blue, meaning the O₂ is depleted.
When less sodium hydroxide is required to turn blue we have depleted sodium hydroxide in the solution that is the yeast added in Phases 2 or 3 of the experiment, consume O₂
Eutrophication is the enrichment of a body of water with nutrients that results in a change in the ecosystem such as: algae production, oxygen depletion and other results that diminishes the water usage.
