Answer:
It is easier to reach a conclusion of causation from an experimental study than from an observational study because an experimental study is backed by evidence whereas an observational study is speculative.
Explanation:
An observational study is based on what appears to the eyes whereas an experimental study has facts and logical proof to connect the hypotheses to the conclusion. Before conclusions are reached in experimental studies, tests are conducted and stakeholders who are representative of the population are surveyed to obtain accurate data that can be further analyzed.
Observational studies are simply speculative and based on guesswork that cannot be relied upon.
This treaty officially ended the Mexican American War on February 2, 1848. It added an additional 525,000 square miles to United States territory, including the land that makes up all or parts of present-day Arizona, California, Nevada, New Mexico, Utah, and Wyoming.
Answer: Evolutionary
Explanation: Evolution is the phase in which the environment related components faces the changes in their characteristics over the certain period of time. This process is the completely natural and selected by the nature.
Professor Polinski is also relating the bonding of the humans in pair form is a evolution process which helps in the nurturing and development of the children.Other given options are incorrect because they don't define the natural change for the survival.Thus the correct option is evolutionary.
The Soviet Union wanted to spread Communism and the US sought to limit it.
They descended from French ppl, French settlers
