Answer:
Spreading axis
Explanation:
Oceanic crust is constantly being pushed horizontally away from the ridge crest toward an oceanic trench. This ridge crest is known as spreading axis or spreading center. The phenomenon itself is known as seafloor spreading. Seafloor spreading as a theory was first proposed by Harry Hess in 1962. He proposed that sea floor moves, as well as continents. The seafloor moves at a rate of about 1-24 cm per year.
Answer
B. Spell checker
Explanation
Spell checker is a program designed to identify misspelled words and notify the writer about the mistake. The programs can further auto correct the word or allow the writer to choose from various corrections of the word. In Microsoft, a red underline appears on the misspelled word to display the error.
