Answer:
Defletion hollows: Defletion hollows are ever wind has removed sand down to a level where a layer of particles is too heavy for the wind to move stabilises the sand and prevent the surface being lowered further. It's also known as blow out dune.
Explanation:
Sorry ,I only know about this so i can't tell u of others
"The coldest temperature recorded in Antarctica was -89.6°C at Vostok station in 1983. The average winter temperature at the South Pole is about-49°C. Your home freezer is only about -15°C. The wind chill factor means that it can feel much colder."
The earth is tilted because of the magnetic fields correlation with the sun
Answer:
The true statement is - Sympatric speciation only occurs in areas where there is local variation in environmental resources
Explanation:
- Sympatric speciation means the evolution of new species from an ancestor species which are occupying in the same area and no geographical barrier takes place.
- Overlapping of ranges takes place to the organism and old and new species are living i the same geographical region.
- A dam diving a fish population could lead to allopatric speciation where geographical barrier causes formation of new species which are completely different from their ancestor species.
<span>A tsunami can occur when there is vertical movement at a fault under the ocean floor.</span>
