One of the researchers proposes using oxygen gas production to measure reaction rates. Which of the following statements best justifies the use of the proposed modification as a way of creating an appropriate control for the investigation?
A
The experiment can be repeated without hydrogen peroxide, which will help eliminate an uncontrolled variable.
B
The experiment can be repeated without peroxidase, which will introduce a second independent variable.
с
The experiment can be repeated without guaiacol, which will reveal the effect of guaiacol on the reaction rates.
D
The experiment can be repeated without water, which will reveal whether the reaction can occur inside a living cell.

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."

not too sure but maybe in the hot springs.

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.