D. All of the above are true.
~Hello there! ^_^
Your question: How often is CO2 cycled through the atmosphere?
Your answer: CO2 is cycled through the atmosphere in 350 years.
Hope this helps~
The safety procedural step that must always be performed
when setting up a vacuum filtration apparatus is that first, you should always
wear the proper protective equipment, next is that the vacuum filtration—you should
clamp the flask of which is needed, securely to the ring stand. It must be
secure or it may be in the way of performing the experiment.
1)Respiration
2)Both
3)Respiration
4)Respiration
5)Respiration
6)Photosynthesis
7)Respiration
8)Photosynthesis
9)Photosynthesis
10)Respiration
11)Photosynthesis
12)Photosynthesis
13)Photosynthesis
14)Respiration
15)Respiration
16)Photosynthesis
