B.) cervix
C.) fallopian tube
D.) placenta
B. Yes, because there is one variable and a control
C. No, because there is not more than one variable
D. No because there is only one variable and a control
Answer:
The correct answer is option B. yes because there are one variable and a control.
Explanation:
The validity of experiments can be tested by the four components of experiments. These four components are control, dependent variable, independent variable, and constants. All of this basic component is the validity of the experiments.
In this experiment there is the control where experiment is performed within controlled and there is also one variable.
Thus, the correct answer is option B. yes, because there are one variable and a control.
Answer:
The correct answer will be option-B.
Explanation:
A scientific experiment must contain three variables: independent variable (which can be manipulated), dependent variable(which can be tested) and control (which is kept constant).
Experimental samples must be divided into two groups: an experimental group in which variable to be studied is tested and a control group in which the independent variable does not influence the experiment.
In the given question, since experimental design contains variables and the experimental as well as the control group which act as a reference group to the experiment.
Therefore, Option-B is the correct answer.
b. humoral immunity
c. cellular immunity
d. innate immunity
Answer:
Croplands, range lands, pastures
Explanation:
B. describes the day-to-day condition of the atmosphere of Earth.
C. involves variations in precipitation.
D. involves variations in temperature.