Which of the following best describes the columbian exchange that occurred during the age of
discovery?
a. it was a genetic shift due to population interbreeding.
b. it was an ecological transformation.
c. it was an exchange of trade foods only.
d. it was a religious transformation.

What important discovery was made by edmond halley and alexis clairaut, using newton's ideas of mathematics and gravity? they created the scientific method to outline how science should be conducted. they were able to find the orbit of a comet and predict the year of its return. they discovered the three newest planets--uranus, neptune, and pluto. they explained why objects appear to have color.