Stored energy. Also this should have been listed under physics lol
The Cenozoic Era started about 66 million years ago with the mass extinction of dinosaurs. Because of this, D could not have been true during the Cenozoic Era.
Trilobites and shellfish are both far more primitive than dinosaurs, even, and would also have evolved before the Cenozoic.
The correct answer would be A. First of all, it has the word modern in it. Second of all, the birds we know today would have certainly been a lot different 66+ mya.
Answer:
The surface layer of the ocean is known as the epipelagic zone and extends from the surface to 200 meters (656 feet). It is also known as the sunlight zone because this is where most of the visible light exists. hope this helps:)
Nerve cells communicate by sending an electrical signal through an axon, from this molecules get released into the synapse this then binds itself onto receptor sites. With ion-linked channel receptors, the ligands get binded to a protein. The ion channels are then opened and the proccess gets repeated. Does that help?
