Download Cycling of Matter

Read Handout: Section 2.6 (Science Perspectives 9 by Nelson) – pages 48 - 51
Approximately how many of your red blood cells are being replaced every second?
red blood cells / second
Approximately how many red blood cells would that be in 1 hour?
red blood cells / hour
-
biogeochemical cycles continuously
and use materials
, rearrange,
what are the root words for biogeochemical?
bio =
& geo =
& chemistry =
Water Cycle
In which part of the environment is most of the water in the water cycle found?
Environment.
Complete the following Figure for the molecule water, labeling numbers 1 – 9.
1:
2:
3:
4:
5:
6:
7:
8:
9:
Carbon Cycle

most of the exchange of carbon occurs between
and
o most of Earth’s carbon is not cycled but sits in ‘sinks’
or
plants

human activities disrupt the carbon cycle by taking carbon naturally found in a
sink and introducing it into the cycle
2 examples of humans disrupting the carbon cycle
1:

2:
this increases the carbon present in the atmosphere and has been linked to
rising temperatures
Nitrogen Cycle
o bacteria remove nitrogen from the atmosphere through nitrogen fixation and
nitrification
 this converts gaseous nitrogen into
,
and
compounds that are available
to plants)
o bacteria also remove these compounds from the soil through denitrification and
return it to the gaseous form
o consumers obtain nitrogen by eating producers
Answer the following questions in your notebook using full sentence answers:
Pg. 47 # 1 - 8