Algae and nitrogen-fixing bacteria are photosynthetic organisms.
B. Phylogeny. Phylogeny has a similar meaning to evolutionary being a synonym<span />
D is the answer (Aa and aa ) i hope this helps
Answer:
Explanation:
the meaning of valence electron is an outer shell electron with atom
Phosphorus is usually a limiting factor or element.
<h3>Is phosphorus a limiting element or factor?</h3>
Phosphorus is usually considered a limiting factor or nutrient in aquatic ecosystems, meaning that the available quantity of this nutrient controls the pace at which algae and aquatic plants are produced.
In other words, phosphorus is a limiting nutrient for aquatic organisms. Its supply is usually small compared to available aquatic organisms.
Thus, Phosphorus is usually a limiting factor or element.
Learn more about phosphorus here: brainly.com/question/1357744
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