3 years ago

Scientists infer that oxygen first began to enter the Earth's atmosphere after the appearance of

1 answer:

5 0

Oxygen entered the Earth's atmosphere after the appearance of the Great Oxidation Event (Great Oxygenation Event). The Great Oxidation is the first mass extinction on Earth.

The Great Oxidation lasted 2.4 to 2.0 billion years ago.

Oxygen appeared on Earth thanks to cyanobacteria using photosynthesis.

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This 1920's black dress with ribbon embroidery (1984.29.1) owned by Ruth Herndon features a ______ hemline.

Tju [1.3M]

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three rows of stitches

Explanation:

This 1920's black dress with ribbon embroidery (1984.29.1) owned by Ruth Herndon features a " three rows of stitches" hemline

This can easily be observed in the picture of that particular dress.

Also, it can be observed that there are five leaves of several shades of green ribbon around the center rose. This was followed by three rows of stitches in a warp pattern that appears in a narrow blue ombre ribbon.