(Q003) Oil forms whenGroup of answer choicesleaves, twigs, and tree trunks are buried and subjected to heat, pressure, and low oxygen.dead algae and plankton deposited in low-oxygen conditions are buried and heated.the decomposition of organic material takes place in an aerobic (oxygen-rich) environment.large sauropod-type dinosaurs decay in swamps.

(Q014) Plant material (leaves, stems, trunks) in oxygen-poor swamps are buried for a geologically long time. The result isGroup of answer choicescoal.kerogen.tar sands.petroleum.

Formation of coal and petroleumCoal and petroleum have been formed from biomass which has been subjected tovarious biological and geological processes. Coal is the remains of trees, ferns, andother plants that lived millions of years ago. These were crushed into the earth,perhaps by earthquakes or volcanic eruptions. They were pressed down by layers ofearth and rock. They slowly decayed into coal. Oil and gas are the remains of millionsof tiny plants and animals that lived in the sea. When they died, their bodies sank tothe sea bed and were covered by silt. Bacteria attacked the dead remains, turningthem into oil and gas under the high pressures they were being subjected to.Meanwhile, the silt was slowly compressed into rock. The oil and gas seeped into theporous parts of the rock, and got trapped like water in a sponge. Can you guess whycoal and petroleum are called fossil fuels?

After a long, long time, the carbon from the remains of dead organisms can be stored in:Fossil FuelsWaterRocks

Which process do detritivores, fungi, and bacteria carry out on dead organic material?

Oil and gas form from _______.Multiple choice question.partially decayed plant mattermarine microorganismsdeposition of carbon in streambedscirculation of oxidated water through shale