Answer:
''they can no longer support their own weight'
Explanation:
The statement ''they can no longer support their own weight'' is a prediction and the scientist has to verify this prediction by performing different experiments on the plant. The scientist has to take a plant and placed in dark in order to see the fall over of plant. If the plant fall over so the we can say that the prediction was right while if the plant did not fall over so it means the prediction was wrong.
Bipedalism has several advantages comparing to quadrupedalism:
<span><span>· </span><span>Raising the head - This brings to the greater field of vision, detection of distant predators or food,</span></span>
<span><span>· </span>Speed - the maximum speed of bipedal animals is higher,</span>
<span><span>· </span><span>Non-locomotory limbs - become available for other functions (for example, manipulation, flight).</span></span>
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Carbon dioxide moves out of the tissues (cells) into the bloodstream to be exhaled in internal respiration.
The correct answer is: b. it doesn’t often reflect reality.
While experimental research has several advantages, including: investigating the effect of one variable on another, and the ability to control and eliminate confounding variables, it also has one major disadvantage. This disadvantage is known as: <em>lack of ecological validity</em>.
Lack of ecological validity means that the findings of research study might not be generalizable to real-life settings, and might only apply to laboratory settings. To avoid the problem of ecological validity, and to increase the validity of an experimental research study, a study should be conducted in natural settings when possible.
