B) Frequency of infectious illnesses usually increases as children grow older.
Answer:
The Excretory system is responsible for the elimination of wastes produced by homeostasis. There are several parts of the body that are involved in this process, such as sweat glands, the liver, the lungs and the kidney system. Every human has two kidneys.
Explanation:
Answer:
Puberty is when a child's body begins to develop and change as they become an adult. Girls develop breasts and start their periods. Boys develop a deeper voice and facial hair will start to appear. The average age for girls to begin puberty is 11, while for boys the average age is 12.
Explanation:
Answer:
0.025
Explanation:
Blood alcohol level is measured as the concentration of alcohol per unit of blood in the body. It is a good indication of how intoxicated a person is.
This can be measured by testing breathe, blood and even urine.
It is not a good system to measure how many drinks a person has had, since body weight, metabolism, health, etc. varies among different people, so testing the blood alcohol level is a good system to use.
