A and B probably take the longest
The system that prepares food for absorbtion into the bloodstream is the digestive food. It makes sure the food in the stomach is broken down.
Answer:
The Earth is called a 'Living Planet' due to its certain features: It is the home of all forms of life such as plants, animals, and human beings because of its appropriate location from the Sun. ... The atmosphere and life supporting gases such as oxygen and its availability are also of significant importance on the Earth.
