The answer is the eardrum. The eardrum is connected to 3 ossicles, the hammer, the anvil, and the stirrup or malleus. It is the part of the ear that vibrates first when sound waves enter the ear.
Nutrients move directly into the esophagus where it continues to be warmed and lubricated as it moves toward the stomach.
1. oxygen
2. diseases
3. food posion
4. pollution ( in the water )
Chloroplasts in the plants can accumulate high levels of toxic singlet oxygen, a reactive oxygen species formed during photosynthesis. Destroyed chloroplast makes the plant wither up and probably die because the plant's chloroplasts are the considered as the nutrient makers. The Chloroplast turns light into energy and without energy it will not be converted to sugar. Since they are the only thing in nature that is able to covert energy to sugar, it would greatly affect the process and affects growth of the plant which are food and oxygen producer so probably human would also run out of food and Oxygen.
Answer: the correct option is : highly developed cell- cell communication.
Explanation: In complex multicellular organisms, cell - cell communication also known as cell signalling is part of any communication process that leads basic activities of cells and coordinates multiple cell functions.
