B) Primary is where there is nothing no rock or soil
Answer:
This is nuclear fusion that happens in the core of stars. This is the process of converting hydrogens into helium. It is also converting mass into energy as the starting mass is higher than the finishing one, that missing mass is released as energy.
Explanation:
The answer is d. Ingestion, digestion, absorption, elimination.
There are 4 phases of the digestive system function:
1. Ingestion - the process of the food entering the mouth.
2. Digestion - the process of breaking the food into small particles.
3. Absorption - the process of the absorbing small food particles into the blood from the intestines.
4. Elimination - is the process of removing the waste out of the body.
