How is controlling wide spread/contagious diseases made difficult by the fact that it spreads through multiple species of animals?
(is it still too complicated?)
Bacterial flagellum is composed of protein flagellum which looks like hollow tube. It passes through protein rings (basal body rings) in the cell's membrane that act as bearings. Flagellum is long, filamentous and it rotates via motor which is located on the inner cell membrane. The motor is powered by proton motive force (flow of protons through the membrane due to a concentration gradient).

The major reason for bird species decline is loss of habitat, especially grasslands and forests. All have experienced declines in some areas since the 1960s and '70s, and further declines are anticipated, due to habitat loss and deforestation, and climate change

It’s after the egg and sperm cell have combined. So it’s “has the complete genetic information to form an adult”.
It would be half before it received the sperm so it’s not the first one. There is clearly NO sign of differentiation so it isn’t the second one. And the cell is the first in the given series so it’s not identical to a parent cell.
It declines. Members above will die off due to starvation, and members immediately below will proliferate and kill off (through predation) the members below themselves.