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How do rocks tell a story of past environments?

Sedimentary rocks tell us about past environments at Earth’s surface. Because of this, they are the primary story-tellers of past climate, life, and major events at Earth’s surface. Each type of environment has particular processes that occur in it that cause a particular type of sediment to be deposited there.

How can rocks help scientists learn about the past?

Geologists study rocks because they contain clues about what the Earth was like in the past. Different rocks form under only certain conditions and even the dullest gray lump of a rock can tell us something important about the past.

What can rock layers teach us about the history of Earth?

The location of fossils in rock layers provides evidence of Earth’s past landscapes. It is hard to guess the age of rock. Scientists have to act like detectives, piecing together a mystery to determine how long ago rocks formed. Fossils found in a particular rock layer help scientists determine the age of the rock.

Do dolphins eat humans?

No, dolphins do not eat people. Although the killer whale is called a “killer whale” it actually belongs to the dolphin family. This marine mammal gets its name from its large size (killer whales can grow between 15 – 30 ft.

Has a dolphin ever saved a human?

In reality, dolphins have saved humans on many occasions. In two (sort of) similar incidents, one in 2004 and one in 2007, pods of dolphins circled imperiled surfers for over thirty minutes in order to ward off aggressive great white sharks.

Will a dolphin die out of water?

A dolphin can live out of water for hours IF it is kept wet and cool. One of the biggest dangers to a dolphin being out of water is their inability to regulate their body temperature.

Has a shark ever saved a human?

A police officer told today how a shark guided him to a rescue boat after he had drifted helplessly in the Pacific Ocean for 15 weeks. Mr Toakai Teitoi’s brother-in-law had perished from dehydration and the 41-year-old policeman knew it was only a matter of time before he, too, succumbed to the elements.