Answer:
Today, drug-resistant infections are a serious threat to people's health. Hundreds of thousands of lives are lost every year because of infections that can no longer be treated with existing drugs. Discovering new antibiotics, able to kill drug-resistant bacteria, is essential to saving modern medicine.
Answer: nervous and endocrine system.
Central nervous system(CNS) is needed to send a signal to many organs to work. Damage in CNS can cause you to stop breathing. The endocrine system is keeping the body healthy by make sure that the blood concentration of glucose and other molecule is enough to sustain life, but not too much to cause damage.
One example of stimulus is reacting to a hot pan. If you touch it, you immediately pull your fingers back. This is your nervous system sending alerts through your body, and to your muscular system. Your muscular system allows you to bend your arm, and move your fingers away from the hot pan.
:) Hope this helps!
Spermatogenesis is the process by which haploid spermatozoa develop from germ cells in the seminiferous tubules of the testis. ... The spermatids are transformed into spermatozoa (sperm) by the process of spermiogenesis. These develop into mature spermatozoa, also known as sperm cells.
Could be a graduated cylinder. Hope this helps :)
