Answer: Option B
Explanation:
Usually in scientific experiments, at least one parameter is checked; here, the growth rate of wheat in two different conditions is being evaluated.
Hence, growth rate of wheat alone in pans A, B and C becomes the standard or referential control against which the experimental control (Wheat + clover) in pans D, E and F is evaluated, since both treatments are exposed to the same external conditions.
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The answer you are looking for is:<span>capillary beds</span>
The anwser should be B. Nonrenewable resources generally have a higher impact on the environmental than renewable resources.
I think the correct answer would be A. The yolk sac becomes the placenta. It is membranous sac that is attached to the embryo. It provides all the nutrition and the blood cells needed by the embryo. It is also called the umbilical vesicle.
Answer:
Louis Pasteur effectively disproved the spontaneous generation concept by performing research that displayed exposure to fresh air was the trigger of the microbial growth.
Explanation: