AP BIOLOGY

Detailed explanation-1: -A) microfossils. Microscopic fossils in rocks that show the outline of what appear to be the circular membranes of ancient prokaryotes are known as microfossils.

Detailed explanation-2: -Palaeontologists actually study all fossilised past life. That can include everything from corals and shellfish to fishes and mammals. It’s not just animals either, palaeontologists also study ancient plants.

Detailed explanation-3: -To simulate the lightning that might have provided energy for chemical reactions in Earth’s early atmosphere, Miller and Urey sent sparks of electricity through their experimental system.

Detailed explanation-4: -The formation of sedimentary rock involves the compression of layers of small particles due to high amounts of pressure. This might have occurred as particles settle down under water.