<h2>Sea star </h2>
Explanation:
In the given example sea star played the role of keystone species
- Robert Paine actually coined the term keystone species to describe the effect that the sea stars had on biodiversity in this community
- Keystone species are those species which are least abundant but play a governing role to decide the structure and function of community
- Loss of keystone species in a community can lead to disturbance in structure and function of a community and it cannot be recovered by other species
I don’t know 22 but I think 21 is B
Answer:
increasing substrate concentration,
Explanation:
The reaction rate still increases with increasing substrate concentration, but levels off at a much lower rate. By increasing the enzyme concentration, the maximum reaction rate greatly increases. Conclusions: The rate of a chemical reaction increases as the substrate concentration increases.
Answer:
Deletion or insertion
Explanation:
Deletions and insertions are type of mutations that can change the reading frame and thus can alter a gene so that its message is changed. These changes are called frameshifts.
Deletion is a mutation in which a base(or sequence of DNA) is deleted from the DNA.
Insertion is a type of mutation in which a base (or sequence) is added to the DNA.
