Answer: Option C) proximal convoluted tubule
Explanation:
The nephron has the proximal tubule where some water, amino acids and salts which are useful to the body are reabsorbed into the blood capillaries against concentration gradient by active transport.
Thus, the process of selective reabsorbtion takes place in the proximal convoluted tubule
D. Ecosystems are important in maintaining the good chain among all the organisms within it, which contributes to a high value of biodiversity
The plant produces sperm cells and egg cells
To prevent the legislative branch from becoming too powerful.