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.
Answer:
True
Explanation:
It is a little misleading but ultimately correct. Homeostasis is maintaining a stable internal environment despite changing external conditions.
Answer:
Infectious diseases are caused by pathogens, which include bacteria, fungi, protozoa, worms, viruses, and even infectious proteins called prions. Pathogens of all classes must have mechanisms for entering their host and for evading immediate destruction by the host immune system. Most bacteria are not pathogenic.
Explanation:
determined by genetic factors and therefore able to be passed on from parents to their offspring or descendants.
Answer:pre-formed structures and chemicals, and by infection-induced responses of the immune system.
Explanation: brainliest?
