What Are the Correct Answers to These Environmental Science Questions?

[nattie44]

Environmental Science...help!

Hi, Anyone knows the answer to this questions?

1) Solutions are always comprised of:
a)water and salts
b)solvents and solute
c)compounds and ions
d)liquids and solids

2)Plants get the nitrogen they need to build additional cells from:
a)directly from the nitrogen in the air
b)protein in the cells
c)ammonia or nitrate in the soil
d)denitrifying bacteria

3)Ammonia (NH3) is converted to nitrite (NO2) by:
a)nitrifying bacteria
b)decomposers
c)denitrifying bacteria
d)nitrogen-fixing bacteria

4)Phosphorus is needed by organisms for
a)bones
b)cell membranes
c)DNA
d)All of the above are correct.

I take any help you can give me. Thank you very much!

 

[GCT]

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[Blueshift5]

Hi there, as an environmental scientist, I am happy to help with these questions!

1) The correct answer is b) solvents and solute. Solutions are made up of a solvent (the substance that dissolves the other substance) and a solute (the substance that gets dissolved). This combination can include a variety of substances, not just water and salts.

2) The correct answer is c) ammonia or nitrate in the soil. Plants absorb nitrogen from the soil in the form of ammonia or nitrate, which they use to build proteins and other essential molecules.

3) The correct answer is a) nitrifying bacteria. Nitrifying bacteria convert ammonia (NH3) into nitrite (NO2) through a process called nitrification. This is an important step in the nitrogen cycle, as it converts ammonia (which is toxic to plants) into a form that can be used by plants.

4) The correct answer is d) All of the above are correct. Phosphorus is an essential element for all living organisms, as it is a key component of bones, cell membranes, and DNA. It is often found in the form of phosphate in the environment, and is cycled through the ecosystem by plants, animals, and decomposers.

I hope this helps and good luck with your studies in environmental science!