Answer: red , violet
Explanation:
The Electromagnetic spectrum involves gamma rays , X rays, ultra violet rays, visible rays, infrared rays, micro waves and radio waves which are arranged in order of increasing wavelength and decreasing frequency.
Visible region is the portion of the electromagnetic spectrum we can see with the human eye. It comprises of VIBGYOR with violet , indigo, blue, green, yellow , orange and red colours. They are arranged in order of increasing wavelength and decreasing frequency.
Shortwave radiations are radiations with shorter wavelengths and longwave radiations are radiations with longer wavelengths.
Thus longwave radiation appears red while shortwave radiation appears violet.
An oxbow lake would result in the conditions you describe.
Natural cracks in rock that form due to exhumation are called: joints
Answer:
Laurasia was made up of of the continents that today are known as North America and Eurasia.
Explanation:
Laurasia was one of two supercontinents that formed as the original Pangaea supercontinent began to separate and push apart about 425 million years ago to 200 million years ago. It separated from the other supercontinent (called Gondwana) about 215 to 175 million years ago. That break was instigated with the opening of the North Atlantic Ocean. The existence of Laurasia was first proposed by South African geologist, Alexander du Toit, in 1937. He hypothesized that Laurasia continued to move and shift northward and it broke into what are today known as North America and Eurasia about 56 million years ago.
