Answer:
Radioactive labeling is a procedure used to monitor the path followed by a chemical element within a biological system to demonstrate the source.
Hypothesis:
The free oxygen produced during photosynthesis comes from water.
Procedure.
Single-celled algae were placed in four petri dishes containing carbon dioxide, glucose dissolved in Water.
In each box the oxygen was radioactively marked.
1 petri dish with CO2 marked. Experimental groups
2 petri dish with H2O marked. Experimental groups
3 petri dish with Glucose marked. Experimental groups (control)
4 petri dish with CO2 + H2O + Glucose, all marked. (control).
<span><span>Chaetognaths worms </span>are the transparent worms that prey on the other plankton.
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Adenine pairs with uracil
guanine pairs with cytosine
4 daughter cells
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Equestrian Protraits demonstrate the elements kept on horsebacks.
Etched forms were made amid Relic, the most celebrated surviving illustration being the Roman statue of the Ruler, Marcus Aurelius.