Biology

Biology, 24.09.2019 03:30, NoodlesYT

True or false? if you did not control variables in a experiment, there would be no way to know which variable explained your results.

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Biology, 08.07.2019 23:00, sjjarvis53211

In experiments, scientists use careful methods to ensure their results are accurate. in an experiment, variables are the things in experiments that can exist in differing amounts or types. variables can be either independent or dependent and both are necessary for a true experiment. think about the variables in the following experiment: jane conducted a simple experiment to see which soil would make her tomato plants grow the tallest. she planted two groups of tomato plants in her back yard, ensuring they all got the same amount of sunlight and water. she planted the two groups in different types of soil and recorded the results. select all true statements about jane's experiment and scientific variables. in jane's experiment, the type of soil she used was the independent variable. dependent variables are the things measured and observed in an experiment. dependent variables are what is tested in an experiment. jane could also measure leaf width as an independent variable. independent variables are changed by the scientists in an experiment. in jane's experiment, plant growth was the dependent variable. independent variables remain the same for all experiments. jane could try this experiment again, using fertilizer instead of soil as a dependent variable.

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Biology, 09.07.2019 08:30, AshlynPlayz45

In experiments, scientists use careful methods to ensure their results are accurate. in an experiment, variables are the things in experiments that can exist in differing amounts or types. variables can be either independent or dependent and both are necessary for a true experiment. think about the variables in the following experiment: jane conducted a simple experiment to see which soil would make her tomato plants grow the tallest. she planted two groups of tomato plants in her back yard, ensuring they all got the same amount of sunlight and water. she planted the two groups in different types of soil and recorded the results. select all true statements about jane's experiment and scientific variables. in jane's experiment, the type of soil she used was the independent variable. dependent variables are the things measured and observed in an experiment. dependent variables are what is tested in an experiment. jane could also measure leaf width as an independent variable. independent variables are changed by the scientists in an experiment. in jane's experiment, plant growth was the dependent variable. independent variables remain the same for all experiments. jane could try this experiment again, using fertilizer instead of soil as a dependent variable

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Health, 26.08.2019 00:20, Symonek

True or false: 1.) a scientific theory is an idea supported by research that attempts to explain existing observations or predict new ones. 2.) a cross-sectional research study analyzes the same group of subjects over a long period of time. *#3 is not true or false* 3.) which of the following statements about extraneous variables is not accurate? a. an extraneous variable can also be a confounding variable. b. an extraneous variable clarifies the relationship between the independent and dependent variables. c. an extraneous variable can alter the results of an experiment in an undesired way. d. an extraneous variable cannot be the same as an independent variable.

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