Question

#1.) ___ is how high you are above sea level. this is a distinguishing feature of landforms.
a. relief
b. biosphere
#2.) ___ is the name given to the shape and composition of landforms on the earths surface.
a. topography
b. crust
#3.) how long does it take for earth to perform one full rotation, this is what provides us with a regular day and night cycle.
a. 24 hours
b. 1 year
#4.) true or false. most of the earth is covered in salt water.
a. true
b. false

Explanation:

• For question 1, elevation is the height above sea - level, and relief is the difference in height between landforms. Biosphere is the global sum of all ecosystems. So the answer is elevation - related, but among the options, none is exactly 'elevation', and we assume the closest concept here is not present, and we analyze the given options.
• For question 2, topography refers to the shape and composition of landforms on the Earth's surface. The crust is the outermost solid shell of the Earth.
• For question 3, Earth takes 24 hours to complete one full rotation which gives us the day - night cycle. One year is the time for Earth to orbit the Sun.
• For question 4, approximately 71% of the Earth's surface is covered by water, and most of this water is saltwater in the oceans.

Answer:

1. None of the above (but if we must choose from given options, no correct answer as neither 'a' nor 'b' is elevation)
2. a. topography
3. a. 24 hours
4. a. True