What Evidence Have Some Scientists Claimed for Ancient Life on Mars

question 32

Multiple Choice

What evidence have some scientists claimed for ancient life on Mars (although the hypothesis has been strongly disputed by many other scientists) ?

• A) an apparent thumbprint on a rock at the Mars Pathfinder landing site
• B) peroxides in the "soil" (regolith) found by experiments on the Viking landers
• C) possible fossilized bacteria in a Martian meteorite
• D) calcium carbonate deposits similar to seashells in a sample of Martian limestone

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Definitions:

Shoulder Extension

Movement of the arm away from the body in the sagittal plane, increasing the angle between the arm and the side of the body.

Lesser Trochanter

A small, bony protrusion located on the femur near the hip joint, serving as an attachment point for muscles.

Greater Trochanter

A prominent area of bone located at the upper part of the femur, serving as a major site of muscle attachment.

Head of Femur

The rounded, upper part of the thigh bone that fits into the hip socket forming the hip joint.