Which is not a factor in a fossil organism being useful as an index fossil? a. it must be limited to a short span of geologic time

b. it must be widespread geographically

c. it must have lived through a long span of time

d. it must be abundant

Drastic boundary changes can occur for all of the following reasons except for a. a shift in the way a river flows b. the collapse of a government system c. a conflict between two neighboring groups d. one country's decision to sell land to another country select the best answer from the choices provide

Ms.ringer asked her class "what are the favorite colors of the students in our school" which student correctly deceives ms.ringer's question

Using complete sentences, outline two specific examples of how technology advances make the world seem smaller.explain what it means to say the world is “shrinking”