When you are faced with a dangerous or threatening situation, your adrenal glands release stress hormones such as adrenaline into the bloodstream. Subsequently, there are increases in your blood pressure, heart rate, respiration, and perspiration. This reaction is known as the

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic.

Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed

Which tool could you see a plant cell? a. a filter b. a microscope c. a microwave d. an electromagnet