How are humans disrupting the nitrogen cycle?

A:sewage runoff

B:excess fertilizer

C:the use of fossil fuels

D:all of the above

A rock has a mass of 6 grams and a volume of 3cm3 what is the density

These are easily extracted with a pH solution of greater than 7? which one A) acid drugs B) metabolites C) base drugs D) derivatives

What is MC2 minus 8? A. MC2 B. 4 C. 9 D. None of the above

Which is a stiff structure outside the cell membrane

Explain how layers that form in ice are similar to tree rings?

Which formula id correctly paired with its name? A. MgSO↓ = magnesium chlorine B. FeO = iron (|||) oxide C. K↓2O = Phosphorus dioxide D. CuCI↓2 = copper (||) chloride

Which of the following correctly explains the role of enzymes in biochemical reactions? A) Enzymes provide energy in the form of ATP to lower the activation energy needed for the reaction.

How does being a landlord relate to chemistry in any way

Element m has an ellectronegativity of less than 1.2 and reacts with bromine to form the compound MBr2. Element M could be?

Which situation describes evidence of a chemical change? A. When food color is added to water, it changes color. B. A solid changes into liquid when heated. C. A solution feels warm after a cool solid is added to it. D.