Ichnology is the study of the trace fossils. Trace fossils are evidences that are left by the organisms and examples would include burrows, coprolites, imprints and footprints.Hope these are the answers and would then be of help in this assignment.
Answer: Narmada
I might not be right but I came across this question A while ago so..
A antonym for biosphere is an environment that is not natural.
Answer:
Desert
Explanation: It is desert because the weather there is hot just like Arizona.
Arizona is located in the orange color.
Answer:
Mercury has the widest variation in surface temperatures between night and day of any planet in the solar system.
Explanation: