Answer:
A
Explanation:
Constructing passage ways near the dams to allow to salmon to swim around blocked rivers. The construction of dams in rivers has blocked the path of some salmons returning to spawning grounds. The best way to overcome this is to make the passage ways near the dams to allow salmons to swim in areas which have blocked due to dams. So that salmons can returned to the spawning ground and can spawn which leads to increase in their population.
The Purpose Cellular Respiration. Cellular respiration is the processby which cells in plants and animals break down sugar and turn it into energy, which is then used to perform work at the cellular level. The purpose of cellular respiration is simple: it provides cells with the energy they need to function. - According to the website I went too. So I'm guessing it's "Produce usable energy - ATP". I hope this helped you! Good luck.
Answer:
1a. Sewage is a liquid byproduct or waste that is carried through a system for treatment.
1b. Local wildlife and such would begin to die and dissipate and the rivers water, untreated would become unviable.
Answer:
"Nucleus" seems to be the correct answer.