Table 2: Diffusion Tests Step 4: Test for
Diffusion of Starch
Step 7: Test for
Diffusion of Glucose
[Not Observed]
Color of Solution Initial Color: Clear
in Dialysis Tube Color After 15 Minutes: Black
Color of Solution Initial Color: Yellow
in Beaker Color After 15 Minutes: Yellow
Initial Color: Light Blue
Color After 15 Minutes: Red
Analysis:
diffused though the semipermeable membrane.

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.

individual oxygen atoms are formed during photosynthesis.-c.

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

hope this .. .

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