Geological records indicate (1 point)
a. that earth was flatter in the past
b. that there were no ice ages until 1 million years ago
c. nothing about the climate in the past
d. at times in the past 2 million years, glaciers covered large parts of earth

The us and canadian governments are doing all of the following to combat environmental problems except a. encouraging the use of public transportation b. enacting clean water policies c. requiring emissions testing d. limiting animal populations in some regions