Answer:
At the beginning of the follicular phase, the lining of the uterus (endometrium) is thick with fluids and nutrients designed to nourish an embryo. If no egg has been fertilized, estrogen and progesterone levels are low. As a result, the top layers of the endometrium are shed, and menstrual bleeding occurs.
Explanation:
Answer:
the internal organ in which the major part of the digestion of food occurs, being (in humans and many mammals) a pear-shaped enlargement of the alimentary canal linking the esophagus to the small intestine.
The mitochondria are like the energy factories of each cell. Their job is to store and make energy, so when you remove them, the cell is unable to:
B. making energy.
Answer:
Water's ionization property creates positive and negative ions, which are essential for chemical reactions.
Explanation:
Answer:
totipotent stem cells → pluripotent stem cells → multipotent stem cells → neuron.
