Answer:
Option B, O2
Explanation:
It is because the oxygen released during the process of photosynthesis comes from the water absorbed by the roots and not by the CO2containing heavy oxygen (18O). In fact oxygen from CO2 containing heavy oxygen (18O) is used in making sugar which is then stored for energy.
Hence, option B is correct
Answer:
When we are outside on a sunny day , we can see how our shadows change throughout the day. The position of the sun affects the size of a shadow. A person or object blocks more light when the sun is low in the sky. More blocked light makes shadows longer. This makes shadows shorter.
Air fresherners. paint supplies
B) favors organisms well adapted to the environment.
Not positively sure about my answer because I haven't read about this since two years ago in biology.
They can be used to produce vaccines.
They can be used to determine the response of tissue to drugs.
They can be used to produce hormones.
