a control helps to increase the reliability of the results. it allows a scientist to compare it to other group(s) in an experiment. if a scientist notices a significant different btwn the control and the other groups, he can logically conclude that the independent variable has an impact on the dependent variable.
a variable is any factor, trait or condition that can exist in differing amounts or types. there are usually three tpes of variables in experiments: the independent, dependent and contolled. the independent variable variable is the one that is changed by the scientists to figure it's affect on something.
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It lasts about 90 minutes for a normal person.
The epithelium with a single layer of tall cells is classified as simple cuboidal epithelium.
Epithelium is one of the major types of body tissue that line the outer surfaces of organs and blood vessels throughout the body.
The epithelium performs the following functions that include:
- protection,
- secretion,
- secretion, absorption,
- excretion,
- filtration,
- diffusion, and
- sensory reception.
There are also different types of epithelium found in different parts of the body. A typical example is the simple cuboidal epithelium.
Simple cuboidal epithelium are single layered epithelium that are as tall as they are wide (cuboidal in shape).
They are found lining areas that are active in secretion and absorption.
Therefore, the epithelium with a single layer of tall cells is classified as simple cuboidal epithelium.
Learn more about epithelium here:
brainly.com/question/17301113
Answer:
1)200
Explanation:
The Sargasso Sea is constantly considered a lifeless environment, due to its high salinity and temperature, which are considered inhospitable for most species. However, the Sargasso Sea is rich in local species, accounting for more than 200 of them, composed of algae, crustaceans, fish, microorganisms, among others.
Answer:
Your bloodstream.
Explanation:
The cells in your pancreas produce insulin which needs to be sent to the rest of your body to tell your cells to take in glucose (sugar) for energy. In order to get sent out of the pancreas' cells, the insulin needs to go through your bloodstream.
