For a scientific theory to be valid, which of the following must be true?

a. it must be well tested.
b. it must be widely accepted.
c. it must explain the observable facts.
d. all of the above

explain

Sink holes may eventually for to join a. wide valleys b. zone of aeration c. dripstones d. aquifer

Match the mountains with the type of collision that formed them. a. andes b. aleutians c. north american cordillera d. appalachians 1. continental- continental 2. continental- oceanic 3. oceanic- oceanic 4. arc- continent

Tone. one cool fact i found studying greek mythology is the connection to modern names. for instance, my hometown, east sparta, ohio, is named after the home of the awesome greek warriors! which revision of spencer's essay best uses a formal tone? one interesting fact i found studying greek mythology is the connection to modern names. my hometown is east sparta, ohio, which is named after the home of the fierce greek warriors. isn't it interesting how greek mythology connects to modern names? east sparta, ohio, for instance, is named after sparta in greece, which you know is home to the strong greek warriors. an interesting fact about greek mythology is its connection to many modern names. one example is east sparta, ohio, a town that takes its name from the home of greece's famous warriors. have you noticed how many modern names come from greek mythology? i didn't know until now that my hometown, east sparta, ohio, is named after the home