Answer:
Fossils
Explanation:
Because most fossils are a hundred, thousand years old, even a million years old...65 million years, that is for the fossils of dinosaurs
1. producing oxygen and nitrogen via photosynthesis.
2. having different ecosystems for living things to live in and survive
Oil shale<span> is a type of </span>sedimentary rock<span> that is rich in kerogen. </span>Kerogen<span> is a part of rock that breaks down and releases hydrocarbons when heated. </span>Hydrocarbon<span>s are substances made entirely of hydrogen and carbon. </span>Petroleum<span> and </span>natural gas<span> are probably the most familiar hydrocarbons. The hydrocarbons in oil shale can be used as an alternative to petroleum or natural gas.</span>
Answer:
false
Explanation:
because it is an emergency operation the doctor has to do everything he can do as soon as possible and not start waiting to be approved by texas health and human services commission I said so because he the doc had to wait to be approved the child might have been dead so the approval of that child must have been done b4 the child got registered in the hospital
