Which element provides strength to the exoskeletons of clams and oysters? sulfur oxygen hydrogen phosphorus

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics

i think that it is plants

thats not even an aswer choice