b. 10% of energy is transferred from the first to the second trophic level.
Explanation:
In trophic level flow of energy is one way, only a small amount of energy get transferred with the organism. A large amount of energy gets dissipated in life processes like respiration, reproduction and digestion. The energy is also released as waste product. Thus, only ten per-cent of the total energy is present in the organism.
The energy transfer does not depend on the number of trophic levels.
 Each trophic level receives the 10% energy from the previous trophic level as when algae is eaten by flagship.
 
        
             
        
        
        
Keratin
Protecting the skin is one of its main responsibilities as a protein in epidermis. 
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The ant and aphids have mutualism type of relationship because they both profit from one another. The aphids are protected while the ant is fed.
<h3>What is Mutualism?</h3>
- Mutualism is a partnership in which both species participate and gain from it. 
- In this instance, ants profit because they eat the waste products left behind by aphids, while aphids profit because ants guard them.
- An illustration of a mutualistic relationship is the one between an animal called an oxpecker and a rhinoceros or zebra.
- The spider crab continues to be hidden from predators. 
- Bees with flowers - Another mutualistic link exists between bees and flowers. 
- Bees move between flowers to collect the nectar they require to produce honey.
-  Pollination occurs when the bee transfers pollen from one plant to another.
Learn more about Mutualism here:
brainly.com/question/9557750
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Answer:
The biggest sharks can reach up to 20 feet long, but most are smaller. The average female is 15-16 feet long, while males reach 11-13 feet.
Explanation:
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