What is an Archimedean screw used for? 1. To move things from a higher level to a lower level.
2. To change the orientation of an object.
3. To change the direction of an object.
4. To move things from a lower level to a higher level.

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?

An uncomfortable feeling in the ears when descending in an airplane is caused by changes in air pressure on the: a. inner ear b. middle ear c. eardrum d. hammer/anvil

Select the correct answer. for their summer holiday, jane and her family are visiting places surrounding the mediterranean sea. which type of biome is jane and her family visiting? a. rainforest b. shrubland c. tundra d. coniferous forest reset next