Humans have three main life processes: nutrition, interaction, and reproduction. The document discusses the major organ systems involved in nutrition (digestive system), respiration (respiratory system), circulation (circulatory system), and excretion of waste (excretory system). It also covers the reproductive system and explains that this system allows humans to have babies, with the fetus growing inside the uterus connected via the umbilical cord.

1. natural

2. Nutrition and reproduction
nutrition
interaction
reproduction
Humans have three life processes:
nutrition, interaction and reproduction.

3. Our digestive system
The mouth, the esophagus, the stomach and the intestine
are part of our digestive system.
mouth
intestine
esophagus
stomach

4. We need food from different groups everyday.
Fish and meat Bread and cereals Milk and diary
Fruit and vegetables Fats and oils
The food Pyramid

5. The nose, the windpipe and the lungs are part of our respiratory
system.
Our respiratory system
Lungs
Nose
Windpipe

6. The heart and the blood vessels are part of our circulatory system.
Our circulatory system
Heart
Blood vessels

7. The kidneys, the ureters, the bladder and the urethra are part
of our excretory system.
Our excretory system helps us get rid of waste products.
Our excretory system
Kidneys
Ureters
Bladder
Urethra
Our excretory system helps us get rid of waste products.

8. Our reproductive system
Our reproductive system allows us to have babies.
The fetus grows inside the uterus.
umbilical cord
uterus
vagina
fetus
Human life cycle
baby child elderlyadult