Many dry cereals are fortified with iron, which is added to the cereal in the form of small iron particles. How might these particles be separated from the cereal?
A. collect the iron filings with a magnet
B. heat the cereal so that the iron particles melt and thereby coalesce
C. blend the cereal to a fine consistency and pass through a filter
D. add water and the iron particles will float to the top
Answer: A
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The general chemical equation for photosynthesis is shown below. Through this reaction, are the oxygens of the water molecules, H2O, oxidized or reduced? 6 CO2 + 6H2O ? C6H12O6 + 6 O2
A. The oxygens of the water molecules are oxidized. B. The oxygens of some of these water molecules are oxidized, while others are reduced. C. The oxygens of the water molecules are reduced. D. The oxygens of the water molecules are neither oxidized nor reduced.
The unfortunate bykill and non-targeted drift net catches
1.have overwhelmed coastal landfills.
2.will become part of the marine food web.
3.will make room for more of the most desirable species.
4.remove animals that would die from pollution anyway.
Convective motion in the atmosphere is approximately ________ times faster than convective motion in the mantle
A) 2,500,000,000 B) 100,000 C) 2,500,000 D) 2,500
An important strategy in choosing the correct map projection should always be to
A. minimize distortion in the part of the map that is most important for the application at hand. B. determine whether distortion needs to be minimized at a single point on the map or along a linear area of the map. C. decide whether it is more important to show area of features or shape of features accurately. D. All of these are important strategies in choosing the correct map projection.