Giving Everything In 1855 noted physician Rudolph Virchow concluded that cells come from preexisting cells. Which of the following scientific statements best supports this component of the cell theory?

A. Cells contain a certain type of organelle that releases the energy necessary to perform cellular activities.

B. Some organisms are composed of a single cell, while others are composed of billions of cells.

C. Some members of a species display a trait due to patterns of inheritance.

D. Chromosomes are copied during mitosis.

"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."

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.