A. the phase when sister chromatids separate n move to opp poles
<span>Mineral deposits in streams may be extracted by which method?
dredging
</span>
Kidney preserve or excrete H⁺ ion and HCO₃⁻ ion to regulate the blood pH.
(2) They stimulate uncontrolled cell division is your answer. This causes cancer, specifically for lungs, lung cancer.