Which tool would be best for monitoring how land use changes over time? A. Satellite images
B. Turbidity charts
C. pH meters
D. Bioindicators
Plz help

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

The p sub shell can hold up to 8 electrons in an atom. true or false?

For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.