The correct answer is option A, that is, only DNA comprises nucleotides.
Nucleotides refer to the organic molecules, which function as the monomer units for producing the nucleic acid polymer DNA. Nucleotides are the building elements of nucleic acids. They are comprised of three subunit molecules, that is, a five-carbon sugar, a nitrogenous base, and at least one phosphate group.
Each time the frog population increases, they’re swamp will be decreasing. Resulting in lack of food due to too much frogs in one swamp.
Answer:
The answer is Small intestine
Hope this helps
Explanation:
Primary succession starts off with the modification of a previously unoccupied area along with increasing variation- this occurs in barren areas devoid of life like sand dunes, and lava flows. Communities in a primary succession include:
-barren rock
-bacteria and fungi
-mosses and lichen
Further Explanation:
Succession involves small scale changes within a community that occur repeatedly over the life of that community.
Ecological communities are highly dynamic- they gradually evolve. Typically their progression involves:
- colonizing species exploiting uninhabited areas (Primary succession)
- becoming a habitable and increasingly complex community
- there is increased diversity of organisms (Secondary)
The makeup of biological communities is crucial to defining Primary and Secondary succession; eventually, through changes in this makeup, a steady-state or equilibrium is reached called a climax community. While Primary succession starts off with the modification of a previously unoccupied area along with increasing variation; secondary succession begins after major disruption in the community such as fires, storms and flooding.
However, the process of becoming a climax community can be pretty complicated- it is very dependent on other factors like temperature and rainfall. Communities that experience rapid change, frequent major disruptions and even human intervention, are less likely to attain a stable equilibrium and may never become climax communities.
Learn more about ecological succession at brainly.com/question/2456852
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