The appropriate answer is doing. All of the above. Heavy metals are sometimes used in agricultural chemicals and can contaminate both terrestrial and aquatic ecosystems. Heavy metal concentrations can build up overtime as industrialization progressed. Chemical spills can introduce heavy metals to ecosystems quickly with devastating effects.
A monkey has 117 bones. But, there are over 250 species of monkey, so it can vary monkey to monkey.
Answer:
C
Explanation:
The answer is C i think but i ould be wrong
