Geologists divide earth’s long history into smaller units that make up the geologic time scale.
a. true
b. false

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.

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.