Question

climatic changes in earths history have enabled the expansion of the polar ice caps. during the middle of the last millennium (approximately the 14th through 19th centuries), a period of glacial growth known as the little ice age happened. during this time, continental glaciers spread from the north pole into northern europe. the spreading ice combined with lower global temperatures to make farming difficult during this period.

1. because of higher / lower global temperatures during the little ice age, the size of polar glaciers has increased / decreased.

Explanation:

The text states that during the Little Ice Age, there was a period of glacial growth. Glacial growth occurs when temperatures are low enough to allow more ice to form and accumulate. Lower global temperatures would cause the size of polar glaciers to increase as more snow and ice build up.

Answer:

lower, increased