Which principle tells you how rock layers are laid?

Biology

2 answers:

sweet-ann [11.9K]3 years ago

7 0

The answer is going to be letter A

uysha [10]3 years ago

7 0

Answer:

B. Original horizonality

Explanation:

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Answer:

D. Mass extinction events separate the three eras from each other

Explanation:

The Phanerozoic represents an eon, and it is the most recent one. It is further divided into three eras, Paleozoic, Mesozoic, and Cenozoic. The division between the tree eras is because of mass extinction events. The Paleozoic and Mesozoic era are divided by the Permian-Triassic mass extinctions. The Mesozoic and Cenozoic are divided by the Cretaceous-Paleogene extinction. The Cenozoic era is still in existence, as there hasn't been a mass extinction of a magnitude big enough so far.

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A maglev train uses powerful magnets to lift the train above the tracks as it moves forward. Such a design reduces what followin

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A. Rolling Friction

Explanation:

Maglev is train transportation that uses magnets. Maglev will have two sets of magnets, the function of the first set of the magnet is to repel and push the train and lift the train from the track and the function of the second set of the magnet is to elevate the train further. In this process, the lack of friction is the main advantage.

Guideway is the magnetic coil running along the track and it repelling the big magnets present on the undercarriage of the train. This repulsion causes the train to go up by 1 to 10 centimetres above from the guideway. All the maglev trains are floating on the magnetic cushion and it reduces the rolling friction.

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Which of the following statements is true about living things?

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The answer is D) A cell is the smallest unit of an organism that is considered alive.

Explanation:

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