Write the Word or Phrase That Best Completes Each Statement

question 322

Short Answer

Write the word or phrase that best completes each statement or answers the question.
-The half-life of radium is 1690 years. If 150 grams is present now, how long (to the nearest year) till only 100
grams are present?

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Definitions:

Hominids

Members of the taxonomic family Hominidae, which includes modern humans, their ancestors, and other great apes.

Walking Upright

Refers to the ability of humans and their ancestors to move by standing on two feet and using the legs for locomotion, distinguishing them from quadrupedal animals.

Large Brains

Refers to species, including humans, that have brains larger than would be expected based on their body size, often associated with higher levels of cognitive function.

Notochord

A flexible rod-shaped body found in the embryonic stage of all chordates that provides skeletal support.