Answer:
A: light availability
B: nutrients
Explanation:
Both nutrients and light availability affect the primary productivity of the freshwater ecosystem, therefore, scientists study both factors to track associated changes. This is because photosynthesis is driven by sunlight and nutrients availability. It is suggested that the abundance of autotrophs (e.g. phytoplanktons) in an aquatic ecosystem increases as light and nutrients availability increase. Thus, there will be more food available for secondary and tertiary consumers to feed upon. Resultantly, the aquatic environment will turn a biodiversity hotspot where many species of living organisms start dwelling. Thus, scientists mainly ecologists would focus on these two parameters at first that lead to consideration of other parameters.
For more information, you may want to read this scholarly article
https://aslopubs.onlinelibrary.wiley.com/doi/abs/10.4319/lo.2006.51.1.0288
It's found in the thylakoid membrane.
Answer:
predicted kingdom
physical characteristics
predictions about its environment
similar living organism
A) Light dependent and light independent/Dark reaction
Friction always opposes motion.
<span>Whether it be through air resistance, or simple surface friction, the speed of a moving body always decreases when some frictional force acts on it. For objects sliding on a surface, friction is less than for objects at rest on the same surface
please mark as brainliest
</span>
