The pollution of boats can<span> hurt the animals it that water.</span>
Answer:
1/2 x 9000 x 30x30=4050000 joule
Explanation:
4050000 energy
Decomposers break down the remains of producers and consumers.
Calcium is a chemical element with symbol Ca and atomic number 20. Calcium is a soft gray Group 2 alkaline earth metal, fifth-most-abundant element by mass in the Earth's crust. The ion Ca2+ is also the fifth-most-abundant dissolved ion in seawater by both molarity and mass, after sodium, chloride, magnesium, and sulfate.[5] Free calcium metal is too reactive to occur in nature. Calcium is produced in supernova nucleosynthesis.
