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A student drew the following flowchart to show the movement of nutrients.

Soil  Roots Plants Animals 

Which process is likely to be occurring in the plant's roots?

◯ A. Photosynthesis

◯ B. Water transpiration

◯ C. Burning of fossil fuels

◯ D. Nitrogen fixation

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Related questions

A student draw the following flowchart to show the movement of nutrients.

Factory  Air Plants Animals

Which nutrient is the student most likely to be diagramming?

◯ A. Oxygen

◯ B. Sugar

◯ C. Carbon

◯ D. Nitrogen

The nitrogen cycle describes the fluxes of nitrogen atoms among air, land, and water. Nitrogen enters the atmosphere in the form of N2O or N2 gas when people burn fossil fuels. Nitrogen enters soil as bacteria convert atmospheric nitrogen to NO3-, which can be absorbed by plants. Water contacting soil will pick up nitrogen and carry it to a lake or ocean. In recent decades, the use of fertilizers containing nitrogen has increased the amount of nitrogen that flows into lakes and oceans, causing blooms of algal referred to as eutrophication.

Use this information and your knowledge about biology to answer questions 16-20.

16. All of the nitrogen in fertilizers will end up in bodies of water. True or False

17. If the supply of nitrogen limits the growth of plants, emissions from burning fossil fuels should lead to more biomass of plants. True or False

18. A teleconnection occurs when nitrogen introduced as fertilizer ends up causing algae to bloom in the ocean. True or False

19. Negative feedback would occur if emissions of fossil fuel increase the rate of nitrification by bacteria. True or False

20. Positive feedback occurs when nitrification by bacteria causes the population of bacteria to grow. True or False

Which of the following provides evidence for evolution?

All of these answers are correct
Comparing DNA sequences between species
Looking at the geographic distribution of similar species
Comparing similarities in embryonic development between species
Analyzing transitional fossils

Which one of the following statements is true?

Natural selection works on non-heritable traits.
Mutations only give rise to harmful traits.
Natural selection works on variation already present in a population.
Individuals evolve through natural selection.

Which one of the following can create new alleles?

Genetic drift
Natural selection
Gene flow
Mutation

Which of the following is true concerning evolution?

An individual can evolve
Genetic drift is a non-random part of natural selection
An organism's fitness is determined by how long it survives
Natural selection occurs through a change in allele frequency

All living things need carbon. How does carbon enter the living portion of an ecosystem?

Atmospheric carbon dioxide taken in by photosynthesis.
Atmospheric carbon dioxide taken in by soil bacteria.
Elemental carbon taken in by plant roots.
Elemental carbon taken in by cellular respiration.
Elemental carbon taken in by cellular transpiration.

The burning of fossil fuels:

Releases excess carbon dioxide into the atmosphere.
Removes pollutants from the atmosphere.
Was developed by scientists to combat global climate change.
Has no effect on the carbon cycle.
Is good for the environment

__________ conducts water and dissolved minerals from the __________ to the ___________.

Phloem; roots; shoots
Xylem; roots; shoots
Phloem; shoots; roots
Xylem; shoots; roots

What is a disadvantage of growing traditional crops such as corn, soy or sugar cane for making biofuel?

they require lots of land and fresh water
they take carbon dioxide out of the atmosphere
they release oxygen into the atmosphere
they release water through their stomata

______ is the source of the oxygen gas released by a photosystem.

NADPH
H2O
C6H12O6
CO2
Chlorophyll

Through what structure(s) do plants obtain most of their water?

interior cells
stems
leaves
roots
stomata

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