The Earth's accepted average pole-to-polecircumference is 40.007 km. If a scientist measuresthe circumference at 39.989 km, what is themeasurement's percentage error?

9. wind power creates pollution. water air soil noise

How does the nervous system affect the excretory system?

3. draw a topographic map that displays the following features: (4 points each) a. the contour interval is 20 meters. b. the point of lowest elevation is 960 meters. c. the point of highest elevation is 990meters. d. there is at least one sinkhole or depression, at any elevation. e. there is at least one steep slope and one gentle slope.