In an ecosystem, there are primarily four basic types of Trophic levels.
Trophic level: In biology, a "trophic level" is a distinct collection of several animals that often occupy the same level of a "food chain" within a certain "ecosystem."
Since, in terms of macromolecules, all energy originates from plants. The tropic levels are filled with plant energy that rises. It might provide structural support for the upper tropic levels as well.
In a particular ecosystem, there are four different trophic levels or types:
-  "Producers" refer to the algae and plants that make their own sustenance.
-  Known as "principal consumers," herbivores typically devour vegetation.
-  "Secondary consumers" are carnivores that frequently ingest herbivores.
-  "Tertiary consumers" are carnivores that frequently consume other carnivores.
To learn more about tropic levels refer the link:
brainly.com/question/28022679
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Answer:
223G
Explanation:
Go from big to small 200, then 20, then 3 g, I can see ur pointer blocking the 3
 
        
             
        
        
        
A) Yes, Jan should undergo genetic sequencing.
BRCA1/BRCA2 are the causes of 20-25% of all hereditary breast cancers, so if Jan's mother and sister both have breast cancer, then the odds are that she has BRCA1 as well.
B) 
Pros: If she does have an abnormal BRCA1 gene, she can take steps to lower her risk of breast cancer.
Cons: The tests can incite discrimination towards her in the workplace, and having it known she has a risk for breast cancer can severely increase the cost of insurance.
C) Genetic sequencing could affect the frequency of genetic diseases because the test could point out --- I can't finish because I have to go. I'm so sorry, reask the url of this question and ask someone to finish. Have a nice day!
        
                    
             
        
        
        
Answer:No  se Explanation: Dicelo a tu corazon