The answer could be (spread), but there isn't much to go on here
Answer:
The correct answer is - Control microcosms did not contain living moss, while experimental microcosms did contain living moss.
Explanation:
The difference between the control microcosms and experiment Microcosms is, the presence of the living moss in the experimental group whereas the control group does not contain living moss.
The independent variable in this research setting is the presence or absence of the living moss and for the control group, the mosses are filtered out and only added the water.
60 years is three half life for the substance, so 40*1/2^3=5
Is there supposed to be a picture for this?
The 6 steps of photosynthesis are
Up above, hope this helps
