I believe the answer is
A
Answer: Higher concentration; Lower concentration.
Explanation: The food that we eat undergoes digestion and breaks down into smaller components.
These small components of the food needs to be absorbed first by the process of diffusion.
The water molecules along with the electrolytes are absorbed from an area of its higher concentration in the lumen is transported to area where its concentration is very low.
Hence, the correct answer is diffusion, which is responsible for the transportation of products from one place (higher concentration) to another parts (lower concentration)in the body.
Its conducted by the conjugation of two mature cells
A. do so on membranes called thylakoids.
The four stages of human life after birth are;
infancy
childhood
adolescence
then adulthood
