Cretaceous (late Mesozoic era).
The earliest type of eukaryotic organism currently known is a type of single-celled algae called red algae. These organisms date back around 1.6 billion years and are one of the oldest forms of eukaryotic life on Earth. Red algae are known for their distinctive reddish color and are an important part of marine ecosystems.
Crystals have been found throughout history, with the earliest known use dating back to around 4000 BCE in ancient Mesopotamia. However, the specific year when crystals were first discovered is not known.
The earliest recorded snowfall date in Dallas, Texas is November 22nd. It is relatively rare for Dallas to experience significant snowfall, as the city's climate is typically more temperate.
In undisturbed strata, the oldest fossils will be the deepest from the surface.
earth cooled suffciently
The earliest instances of hydroponics are Hanging Gardens of Babylon in 600 BC. There is also evidence of the Mayans growing plants on rafts in lakes but no date is known.
The first cello was made in the 1500s.
The earliest known textually evidenced approximations of PI date from around 1900 BC. They are found in the Egyptian Rhind Papyrus.
SPREAD PERIOD
The earliest known existence of a water mill seems to date back to the Byzantium times, in the region of Turkey. This time period may date back as early as the third century B.C.
The Earliest Known Shoes Date To About 7000 To 8000 B.C!
The earliest known examples of toast racks date from the 1770's.
According to the Muslims, the earliest recorded date of the Quaran is 610.
== == th earliest known shoes date to about 7000 to 8000 BCE!!!
The interval of time from the earliest date a patient could have been infected to the date of treatment is known as the "window period." This period is critical for understanding the progression of an infection and determining the appropriate timing for testing and treatment. It helps in assessing when symptoms may appear and when the disease is most contagious.
Angiosperms, or flowering plants, first appeared during the early Cretaceous period around 130 million years ago. This group of seed bearing plants diversified rapidly and became the dominant type of plant by the end of the Cretaceous period.
The earliest date you will be able to obtain a learner's permit?