Answer:
internal validity
Explanation:
Internal validity: The term internal validity refers to the approximate fact of the interference of causal or cause-effect relationships. It is valid in study or research that aims at demonstrating a causal relationship. The internal validity is irrelevant in descriptive and observational studies. It defines the degree to which a given study is being conducted properly.
Threats to internal validity include history, testing, regression instrumentation, selection, or experimental mortality, etc.
Microscope increases the information by magnification, resolution and contrast.
Microscope is the device used to view the objects that human eyes are incapable to see. The microorganisms, cells etc are viewed through the microscope. Microscope aids in viewing these specimens by three properties namely magnification, resolution and contrast.
Magnification is defined as the increasing the apparent size of object. The actual size of the specimen remains same. Resolution refers to minimum distance that separates the object. Due to resolution, we are able to see distinct images on magnification. Contrast is the adjustment of light intensity to assist in viewing and differentiating the object from its own and overall background.
Learn more about microscopy -
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Answer:
Ask Google
Explanation:
Google, Bing, Chrome, etc. are your friends here! I'll include two just to be helpful.
From what I've seen, though, it's a word, not a place?
Answer:
1. Canada, 2. North America, 3. North West
Explanation:
