A) increasing trade with the Europeans
B) desire to make a religious pilgrimage to Mecca
C) improved transportation infrastructure
D) rise of the middle class that could afford leisure travel
Isotope is the study and application of stable and radioactive isotopes to geological processes and their time scales.
Answer:
In space there is literally NOTHING to reflect light except planets, moons, etc.
Water reflects blue light at the surface.
An orthophoto is an aerial photograph planimetrically corrected. Orthophotographs have the positive attributes of a photograph such as detail and timely coverage, and the positive attributes of a map including uniform scale and true geometry.