We as humans need Nitrogen to survive. We breath 78 percent nitrogen and 21 percent oxygen
Answer:
A river gives the inhabitants a reliable source of water for drinking and agriculture. Additional benefits include fishing, fertile soil due to annual flooding, and ease of transportation. The first great civilizations, such as those in Mesopotamia and Ancient Egypt, all grew up in river valleys.
Explanation:
An experiment is a type of empirical study that features the manipulation of an independent variable, the measurement of a dependent variable, and control of extraneous variables.
What exactly is experimental research?
- A study that carefully follows a scientific research strategy is called experimental research.
- It consists of a hypothesis, a controllable variable, and variables that can be measured, calculated, and compared.
- Most crucially, controlled environments are used to conduct experimental research.
What are the four categories of experimental study?
- While experimentation as a whole encompasses this form of research, individual research designs have certain characteristics.
- The four main design types that are pertinent to user research are correlational, experimental, and quasi-experimental.
Learn more about experimental research
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No i dont think so because they can use that money
Answer:
Reconstruction, in U.S. history, the period (1865–77) that followed the American Civil War and during which attempts were made to redress the inequities of slavery and its political, social, and economic legacy and to solve the problems arising from the readmission to the Union of the 11 states that had seceded at or ...
