What if the sinks took up more of the carbon dioxide than the source produced

in a word, a scientific question is testable. a testable question is one that asks about objects, organisms or events found in the world around it

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

a. 35°c

b. 25°c

c. 10°c

d. 40°c