A crowbar of length 1m is pivoted at 20cm away from the load of 400N calculate effort applied ,MA, VR ,efficiency ,show a diagram of lever

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.

Scientists discovered fossils in several layers of the earth you see here. they found fossils of algae, snails, and clams in layer d. given that information, where do you think they found fossil evidence of simple land plants and amphibians?