The four distant planets are mostly made of
rock
gas
water
radiation
Earth can support life because of the presence of
heat
ice
liquid water
rocks
The layer of the atmosphere in which rainstorms occur
hydrosphere
stratosphere
troposphere
thermosphere
Rocks formed from cooling lava of volcanic eruptions are
igneous rock
limestone rocks
sedimentary rocks
metamorphic rocks
Temperatures in the thermosphere can reach
-100 °C
200 °C
1000 °C
2000 °C
Earth's fairly steady surface temperature is due to the presence of
oxygen
wind
Fossils are usually found in
sedimentary rock
metamorphic rock
lava
More than 97% of the hydrosphere is
salt water
fresh water
underground water
ice caps and glaciers
Aquifers transport
water from reservoirs
surface runoff
ocean water
groundwater
The most abundant gas in the Earth's atmosphere is
nitrogen
carbon dioxide
water vapor
The ozone layer is part of the
mesosphere
An organism interacts most with the
atmosphere
lithosphere
biosphere
