Good question:
George Washington became president in 1789 when 69 members of Congress decided to vote him president. He was a military General and at that time, would be a perfect president.
The reason he became president was that: "George Washington, the commander of the Continental Army during the Revolutionary War, is unanimously elected the first president of the United States by all 69 presidential<span> electors who cast their votes."
Quoted answers are NOT mine. All credits go to their owner.s
Source/Answer credits.
http://www.history.com/this-day-in-history/george-washington-is-elected-president
Further information/answers provided in the link above.
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Answer:
There are three main types of variables in a scientific experiment: independent variables, which can be controlled or manipulated; dependent variables, which (we hope) are affected by our changes to the independent variables; and control variables, which must be held constant to ensure that we know that,A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled.There are six common variable types:
DEPENDENT VARIABLES.
INDEPENDENT VARIABLES.
INTERVENING VARIABLES.
MODERATOR VARIABLES.
CONTROL VARIABLES.
EXTRANEOUS VARIABLES.
Variable of interest, in an experimental study, a changing quantity that is measured. One or more of these variables, referred to as the factors of the study, are controlled so that data may be obtained about how the factors influence another variable referred to as the response variable, or simply the response.
Strait of Magellan. Hope this helps
Answer: For instance, plants (biosphere) grow in the ground (geosphere), but to survive they absorb water (hydrosphere) and carbon dioxide (atmosphere). Nor are plants merely absorbing: they also give back oxygen to the atmosphere, and by providing nutrition to animals, they contribute to the biosphere.
Hope this helps...... Stay safe and have a Merry Christmas!!!! :D
Explanation:
From largest to smallest:
Biosphere, biome, ecosystem, habitat