Font size
WorksheetsChapter 42
Total questions: 10
Worksheet time: 7mins
Energy ____ ____while matter ____ ____an ecosystem
cycles within, flows through
flows through, cycles within
cycles within, cycles within
flows through, flows through
Which two factors most directly affect primary production on land?
light and nutrients
light and temperature
temperature and precipitation
precipitation and matter cycles
Dumping nutrients into an aquatic ecosystem often leads to (a)
The amount of chemical energy used for growth/accumulating biomass is also known as
primary production
secondary production
net primary production
cellular respiration
On average, approximately _____ of energy passes on to the consumer
5-15%
10 kcal
80-90%
50 kcal
Biomass pyramids have
more primary consumers
more primary producers
more secondary consumers
(a) is when we use living organisms to remove a toxin from an ecosystem
Cellular respiration and photosynthesis are two key aspects of
the carbon cycle
the nitrogen cycle
the phosphorous cycle
the water cycle
The law of conservation of mass states that matter cannon be ___________ nor __________
(a)
If there is 25 kcal of energy in the producer, how much energy would you expect there to be in the secondary consumer?
250 kcal
2.5 kcal
0.25 kcal
12.5 kcal
