How would a geologist use absolute dating to determine the age of sedimentary layer?

Which of the following definitions describes a chemical hazard? a. Can be present in dust, fumes, liquids, solids, mists, vapors, or gases of products used at a site or released during a construction job b.

Can ocean currents be caused by differences in water temperature

How do bears, birds, invertebrates and trees each benefit from the presence of salmon?

3 The volume of a gas is 50.0 mL at 20.0 K. What will be the new temperature if the gas is compressed to 10.0 mL under constant pressure? A 100 K B 10.0 K C4.00 K D 5.00 K

Examine the nuclear reaction: H+ón - H. Why is this classified as a nuclear reaction rather than a chemical reaction? It is not balanced. A new compound is formed. A change has occurred in a nucleus. A new element has been formed.

A scientist discovers a new type of polymer. What must be true about this polymer? A. It contains carbon atoms arranged in a ring structure. B. It has double bonds between all the carbon atoms. C. It contains molecules of many different types. D.

A line in the lyman series of hydrogen has a wavelength of 122 nm. from what state did the electron originate?

What are the products of photosynthesis? A. Glucose and oxygen B. Oxygen, solar energy, and glucose C. Carbon dioxide, water, and solar energy D. Hydrogen, oxygen, and carbon

A sample of a substance that has a density of 0.824 g/mL has a mass of 0.421 g. Calculate the volume of the sample.

The tyndall effect is used to detect A: suspensions B:liquid solitions C:tyndalls D:colloida