What Is the One Piece of Evidence That Suggests That

question 32

Multiple Choice

What is the one piece of evidence that suggests that the dinosaurs were made extinct by the impact of an asteroid 65 million years ago?

• A) the crater from this impact can still be seen in the deserts of Arizona
• B) a layer of sediment laid down at that time contains grains of shocked quartz, solidified rock droplets, and soot from global wildfires
• C) a layer of sediment laid down at that time is littered with dinosaur fossils
• D) dinosaur fossils are found in rock layers older than 65 million years but not younger than 65 million years

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Definitions:

Shift Signal Valves

Hydraulic valves in an automatic transmission that regulate the flow of transmission fluid to engage different gears based on speed and load.

Forward Ratios

The gear ratios in a transmission that provide forward motion, influencing the vehicle's speed and acceleration.

Caterpillar CX28

A model of automatic transmission designed by Caterpillar, specifically developed for use in heavy-duty vehicles and equipment.

Continuously Variable

Describes transmissions that can change seamlessly through an infinite number of effective gear ratios, providing smooth acceleration.