To hear heart rate............
Answer: Blood is a body fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells. In vertebrates, it is composed of blood cells suspended in blood plasma.
Explanation: Platelets help the blood to clot. Clotting stops the blood from flowing out of the body when a vein or artery is broken. ...
Barrier methods of contraception would include:
1. Diaphragm
2. Sponge
3.Cervical cap
4.Male condom
5. Female condom
6. Spermicide.
Barrier methods of family planning are physical or chemical barriers that function to prevent conception. They have some advantages and disadvantages. For example some advantages of the diaphragm are that it has no effect on a woman's natural hormones, it can be used while breastfeeding beginning 6 weeks after birth. Some disadvantages are that there is increased risk of toxic shock syndrome if diaphragm is left in for more than 24 hours. Also it may have to be used in conjunction with another barrier method to enhance its efficacy.
Some murderers leave behind signatures like objects with their victims or certain type of bodily harm.
