Which biogeochemical cycle has the least activity because the essential element is mostly stored in rock?

The natural abundances of elements in the human body, expressed as percent by mass, are: oxygen (O),65 percent; carbon (C), 18 percent; hydrogen (H), 10 percent; nitrogen (N), 3 percent; calcium (Ca), 1.6 percent; phosphorus (P), 1.

Examine Na + with the anions F-, Br-, OH-, NO3-, and ClO4-. How many anions are there in each of these formulas?

If a molecule with an empirical formula CHO has a molar mass of 88.12 g/mol, what is its molecular formula?

If two atoms combine by sharing electrons, what kind of bond is formed?

Why are nonvascular plants found in moist enviroments?

Which stament best describes a solution

Which answer accurately describes the difference between speed and velocity? Read each answer choice carefully. Question 4 options: A. If speed is constant, then velocity is also constant. B. Speed requires direction.

Least reactive element of period 3

A chemical formula shows the kind and number of Atoms that form a what? compound, mixture, solution, or suspension

What gas was used as a deadly posiosn in world war 1?