1 point 8. Which one of the following would you use to separate sand from iron
filings?
a bar magnet
filter paper
chromatography paper
alum
of substances may best be separated

How are extrusive rocks formed? magma gets trapped inside earth and cools to rock. volcanoes apply force to solid rocks and eject them. magma gets forced to earth’s surface and cools to rock. volcanoes trap lava inside earth, where it cools to rock.

In the african savanna,more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.