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Combine Boyle’s law, Charles’ law, and Gay-Lussac’s law to express a single proportional relationship between pressure (P), volume (V), and temperature (T).

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

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.