Very powerful microscopes were needed before cells could be observed in detail
Answer:
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Explanation:
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Answer:
Independent variable: varying amounts of light
Dependent variable: plant growth
Explanation:
The variable, which are factors that can be altered, in an experiment can either be independent or dependent. An independent variable is one in which the experimenter manipulates or controls in order to bring about an outcome. For this experiment conducted by Rachel, the independent variable is the VARYING AMOUNT OF LIGHTS.
The dependent variable is the variable that responds to changes of the independent variable. In other words, the dependent variable is the outcome of manipulating the independent variable. Hence, the dependent variable is dependent on the independent variable. For Rachel's experiment, the PLANT GROWTH is the dependent variable because it is what responds to changes in amount of light (independent variable).
Answer:
The correct answer is C. continued education
Explanation:
Education is important for both low and high-income countries for the prevention of disease in their people like HIV, tuberculosis. School education is very much important which provide information about the infectious and non-infectious disease to the children.
Educating children about the prevention of these diseases is important because school children are at the greatest risk of getting STDs. Education is one of the most cost-effective ways to prevent HIV, tuberculosis and other diseases. Therefore the correct answer is C. continued education.
