It is called a homogeneous mixture
Answer:
-The moon orbits the Earth
-The Earth orbits the Sun
-The Moon orbits the Earth but not the sun
The answer is D. <span>Conclusions are drawn.
This is the only choice that can be done after data gathering, formulation, and analysis.
Other choices are in correct
</span><span>A. Controls and variables are chosen. (Identified before an experiment)
B. The initial experiment is designed. (Has been planned before an experiment is done.)
C. The initial hypothesis is formed. (Before the experiment a hypothesis is already drawn.</span>
The answer is <span>Time is the independent variable, and the number of birds is the dependent variable. </span>
<span>An independent variable is variable that is not affected in the experiment. It is what experimenter controls. On the other side, a dependent variable is called dependent because it depends on the independent variables. It is what is affected during the experiment.
In Sam investigation, he controls time - he counts birds at 6 a.m. and 6 p.m. So, time is the independent variable. The number of birds is affected during the experiment, so it must be the dependent variable.
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