<span>Grasslands are one of the most widespread of all the major vegetation types of the world. This is so, however, only because human manipulation of the land has significantly altered the natural vegetation, creating artificial grasslands of cereal crops, pastures, and other areas that require some form of repetitious, unnatural disturbance such as cultivation, heavy grazing, burning, or mowing to persist. This discussion, however, concentrates on natural and nearly natural grasslands.
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Carbon film fossil is the type of fossil that preserves delicate details of an organism after pressure squeezes out liquids and gases.
Carbon film fossil is a type of fossil that is mainly composed of carbon and can preserve delicate details of organism’s (animal and plants) parts. The formation of carbon film fossil starts when a dead organism is buried under sediments. After some time, the organism will begin to decay in a process known as carbonization. Pressure will squeeze out liquids and gases from the dead organism, leaving behind a layer of carbon. Carbon film fossils usually appear black or brown in colour.
Observation designed to minimize the effects of variables other than the independent variable.
Answer:
Wool
Explanation:
"The hair of sheep is sheared and processed into wool."
