Water Cycle
Water falling to the earth from condensed clouds is known as what?
a. precipitation c. evaporation
b. percolation d. transpiration
A) precipitation.
What is wrong with atmospheric nitrogen?
a) there is too much of it
b) it is in a form that cannot be used by organisms
c) there is too little of it
d) it is contaminated
b) it is in a form a that cannot be used by organisms
What do biological systems do to matter within the biosphere, allowing matter to recycle?
a. absorb it c. recycle it
b. transform it d. destroy it
The majority of the phosphorus in the world is stored in what?
a. plants c. soil
b. rocks d. animals
b.) rocks
Which biological process do plants use to take in carbon dioxide from the atmosphere and get energy?
a. respiration c. assimilation
b. photosynthesis d. decomposition
b) photosynthesis.
Once that water falls to the other, what is it considered?
a. soil c. groundwater
b. oceans d. rivers
C) groundwater
Who "fixes" the nitrogen into a form that we can use?
a. plants c. humans
b. animals d. bacteria
d) bactiera
What does biogeochemical cycling allow nutrients to do throughout the biosphere?
a. renews c. circulates
b. disappears d. disintegrates
c) circulate.
Which is the substance formed from decomposing matter?
A. water C. nitrogen
B. carbon D. phosphorus
d.) phosphorus
Which is a waste or by-product of the photosynthesis process?
A. carbon dioxide C. oxygen
B. nitrogen D. water vapor
c) Oxygen
How does ocean/lake water return to the atmosphere?
a. transpiration c evaporation
b. condensations d. accumulation
c) evaporation.
Animals get most of the nitrogen they need by what?
a. nitrogen fixation c. adsorption
b. assimilation d. denitrification
b) assimilation
The amount of nutrients (such as nitrogen, oxygen, etc.) within an ecosystem is known as what?
a. nutrient limitation c. macronutrients
b. nutrient depletion d. nutrient availability
d) nutrient availability.
What must happen to the rock in order for plants to absorb the phosphorus within them?
a. stays in the same form c. erosion of the rock
b. deposition d. decaying of rocks
c) erosion of the rock
What has happened to the carbon over millions of years?
a. turned into fossil fuels
b. turned into green house gases
c. been combusted
d. has been untouched
a) turned into fossil fuels
Which process within the water cycle is considered "biological"?
a. perspiration c. transpiration
b. condensation d. evaporation
c) transpiration
Planting legumes in a field the year before a crop will do what to the productivity of your field?
What is "increase productivity because there is more nitrogen in the soil".
In which scientific study would an ecologist take part?
A. observe how coral colonizes a sunken ship
B. classify three new rainforest insect species
C. compare fossilized ant species in amber
D. assess the rabies risk of wild raccoons
a.) observe how coral colonizes on sunken ships
Herbivores and carnivores obtain phosphorus by doing what?
a. consuming plants or animals c. drinking
b. dying d. nitrogen fixation
a.) consuming plants and animals
What are the two major life processes that involve carbon and oxygen?
a. death and decay
b. fuel combustion and open burning
c. coal formation and photosynthesis
d. photosynthesis and respiration
d.) photosynthesis and respiration
What is percolation?
a. snow, sleet, rain
b. water entering into the ground
c. evaporation of water through trees
d. the formation of clouds
b.) water entering the ground
Nitrogen is used in the body to make what?
a. DNA and proteins c. carbohydrates
b. lipids d. fats
a) DNA and proteins.
Which is part of the biogeochemical cycle?
A. carbon trapped on the ocean floor
B. helium gas escaping into space
C. lava flowing from an active volcano
D. solar radiation traveling to Earth
a.) carbon trapped on the ocean floor
Phosphorus is returned to the rock cycle from plants and animals by what?
a. decomposition c. organic waste
b. volcanoes d. sedimentation
d.) sedimentation
Why do we need carbon?
a. to carry out cellular processes
b. to create DNA and protein
c. to run our cars
d. all of the above
d.) all of the above