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The Fossil Record Indicates That Angiosperms First Appeared How Long

question 89

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The fossil record indicates that angiosperms first appeared how long ago?


Definitions:

Pelvic or Fetal Ultrasound

A non-invasive imaging technique used to observe the developing fetus or pelvic organs using high-frequency sound waves.

Electron

A minute particle of matter charged with the smallest known amount of negative electricity; opposite of proton.

Negative Electricity

An outdated term historically used to describe what is now known as the flow of electrons, or electric current, particularly in the context of static electricity.

Proton

A subatomic particle found in the nucleus of an atom, carrying a positive electrical charge.

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