Answer:
Many cities were overcrowded with limited housing and few sanitation services.
Explanation:
During the late 1800s, urban areas grew very fast because economic opportunities were better than in the countryside. This attracted people from rural areas, and also from abroad, who flocked to the cities too fast for the cities infraestructure to keep up with.
This made most cities at the time very overcrowded, with few public services that were overstrained, and with serious problems in terms of sanitation and public safety. However, people could still earn higher incomes than in the countryside, and despite all these problems, the cities did not stop being attractive for both domestic and international migration.
Answer:
- He can only catch old fish (past the reproductive age).
Explanation:
As per the given description, the strategy that the commercial fisherman can employ to ensure the sustenance of population of tuna fishes in long-term would be 'catching only the old fish past their reproductive age' as it would give time and space to tuna population present in the water to reproduce and multiply its population in the meantime. This technique is recognized as 'purse seining' where the fisherman would target the old fishes and reduce the bycatch of tuna fishes so that its over-exploitation could be held for a while and give them required time to regain their population.
Answer:
Natural resources are important to study, because they're drivers of modern economics. The natural resources of Australia include most famously coal, iron ore, and gold. Metals like iron ore and gold total 28% of Australian exports, but coal isn't far behind at 18%.
Explanation:
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--ALASKA
Answer:
It is Imperialism.
Explanation:
The US's imperialist policy began in the late 1890s, when the Spanish-American War broke out. The Americans won, and occupied Cuba, the Phillipines, and also Guam. In the same year, the US also passed the Newlands Resolution, which allowed the US to annex Hawaii.
Answer:
Ceiling effect
Explanation:
Full question
Hannah wants to see if her new technique of ping-pong playing can increase one's ping-pong performance. She asks the U.S. Olympic ping-pong team to work with her. Half of the U.S Olympic team is randomly assigned to be taught by the new style, the experimental group, and the other randomly assigned half are not, the control group. Her technique does not significantly increase the performance of the experimental group compared to the control group, perhaps because they are already so good at the sport. This could be an example of
a. the need for matching groups.
b. a ceiling effect.
c. the need for determining initial comparability.
d. an internally invalid study.* .
Ceiling effect
In Hannah case the experimental group and the control group was pretty much not significantly different because both groups were already good at the sport. Her experiment couldnt function properly because there is no accuracy to the test since both groups perform well, this is known as a ceiling effect
The term ceiling effect is a measurement limitation that occurs when the highest possible score or close to the highest score on a test or measurement instrument is reached, thereby decreasing the likelihood that the testing instrument has accurately measured the intended group.
