What Hypothesis Did Luis and Walter Alvarez Test in Relation

question 31

Multiple Choice

What hypothesis did Luis and Walter Alvarez test in relation to the mass extinction of dinosaurs 65 million years ago (MYA) ?

• A)The mass extinction 65 MYA was caused by a surge of catastrophic cyclones.
• B)The mass extinction 65 MYA was caused by a slow but steady increase in climate temperatures.
• C)The mass extinction 65 MYA was caused by an impact of an extraterrestrial object.
• D)The mass extinction 65 MYA was caused by the loss of preferred plants for food.

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Definitions:

Wavelength

Distance between the crests of two successive waves.

Photolysis

Process by which light energy breaks down a molecule.

Photosynthetic Pathway

The series of chemical reactions by which plants, algae, and some bacteria convert sunlight into chemical energy.

Hydrogen Ions

Positively charged ion (H+) formed when a hydrogen atom loses its electron, playing a critical role in acid-base balance and cellular metabolism.