Answer:
top right: Mitochondria
bottom right: cell wall
Left: cytoplasm
i believe if i can see it correctly it is kind of hard considering the picture.
Natural selection is a central concept of evolution. Natural selection is the process where organisms with favorable traits are more likely to reproduce. In doing so, they pass on these traits to the next generation. Over this time this process allows organisms to adapt to their environment.
Skeletal muscle! (or striated muscle).