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>Almost all weather occurs in the lower layer of the atmosphere (the Troposphere), with the exception of large storms like hurricanes or large thunderstorms (whose clouds have great vertical development and reach the Stratosphere.)</span>
B. How much water is used to produce one paper bag? Let me know if this helps.
Answer:
D
Explanation:
it regulates the flow of water into the cell
The answer to this question is : <span>Plantae</span>