Apair of scissors is a first class lever. the fulcrum is between the handle and the blades. the blades contain two simple machines back to back: they are
a) gears.
b) levers.
c) inclined planes.
d) wheel and axles.

Choose each of the settings that follow and list them below do it ill mark brainliest first object= position= speed= acceleration= second object= position= speed= acceleration=

What is an aquifer for science class

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to