Answer:
Explanation:
Extraneous variables are variables in that could affect an experiment result and needs to be controlled. They are not the independent variable but they can occur if not well controlled in an experiment.
An extraneous variable becomes a confounding variable when it also changes with the variable that is to be studied bringing about alternative meaning to the experiment. It is automatically part of the experiment
Confounding variable should be avoided in an experiment to avoid results that are unclear.
Example of extraneous variables include environment such as temperature change, soil etc.
The US Government was killing the buffalo which were need by the Native Americans in order to survive. People would shoot the buffalo for their skins or meat, sometimes both. It caused the Natives to go hungry and it helped the US in their war against them.
Explanation:
It is rather for us, the living, we here be dedicated to the great task remaining before us – that, from these honored dead we take increased devotion to that cause for which they here, gave the last full measure of devotion – that we here highly resolve these dead shall not have died in vain; that the nation, shall have a new birth of freedom, and that government of the people, by the people, for the people, shall not perish from the earth.
The Bering Land Bridge is the name given to the land bridge that is believed to have once existed over the Bering Straight which allowed for early settlers to migrate into North America during the last ice age.
Answer:
Alliie's situation best illustrates scarcity.
Explanation:
Scarcity refers to the situation when there are unlimited wants and limited resources. In the given scenario, Allie wanted to buy running shoes which cost her $90. However, her debit card was declined because she did not have enough resources (money) to pay for the shoes. Scarcity is a rather common concept which is applied all over the world because people have unlimited wants and limited resources to cover their demands.
