Answer: Its D
Explanation: Thats the 2nd ffrom final step from letting out wasts
Answer:
Bone.
Explanation:
Calcium is one of the important element present in the body. Calcium plays an important role in the muscle contraction. The calcium ions also acts as a signalling molecule during cell signalling.
The calcium is present in our extracellular fluids, bones, and teeth. The major constituent of calcium is present in the bone. The bone consists of around 90% body;s calcium.
Thus, the correct answer is option (b).
Answer: phytoplankton
Explanation: shrimp and krill are primary consumers. Primary consumers rely on producers for food. Phytoplankton are producers.
Because people and animals exhale carbon dioxide which plants need and they release oxygen
