A monhybrid cross is the inheritance of a single character and dihybrid cross is the inheritance of two difference character.
Answer:
The Respiratory system allows the entry of oxygen into the body and releases Carbon Dioxide. The Oxygen travels across lung tissue into blood vessels and the blood carries the oxygen around the body. Thus the Respiratory and Circulatory systems work together in gas exchange which is vital in Homeostasis.
The answer could be any of the following:
* energy
* sugar
* carbohydrates
* (possibly even) food.
Growth and development
Reproduction
Maintains homeostasis
Has cells
Metabolism
Heredity
Responds to stimuli
Adapts to environment
