Answer:
Indicator species
Explanation:
Indicator species refers to the species whose presence or absence in particular ecosystem indicates about the condition of the ecosystem.
In the given question, the stonefly which cannot survive if the dissolved oxygen in the water gets reduced as a result of the pollution indicates that the ecosystem or habitat has some pollutants which have decreased the level of DO in the aquatic habitat.
Thus, the indicator species is the correct answer.
Trigeminal nerve. R<span>esponsible for sensation in the face and motor functions such as biting and chewing.
Good luck and have a nice day.</span>
They are in algebraic I think
C. Calcium Salts
Hope this helps!
Answer:
b. the 20 amino acids found in proteins differ in the composition of their R groups, which may be either polar or charged.
Explanation:
Since the proteins are polymers joined by a big number of amino acids, all the joins occur the same way because in all the amino acids there is always one part that is exactly the same in all of them.
The rest of the molecule in the amino acids, the R group, is different in each one, that is the characteristic of each one, and this is the part that can give the name and some other chemical properties.
