The right answer is Lichen.
In ecology, a pioneer species is one of the first forms of life that colonize or recolonize a given ecological area.
Lichens are composite organisms resulting from a symbiosis between at least one heterotrophic fungus called mycobionte, representing 90% of all, and microscopic cells with chlorophyll (green algae or cyanobacteria autotrophic for carbon) called "photobionts" .
a naturally occurring development or body of water that divides and detaches one area from others.
During Stage A the muscles and tendons are working in unison to pull the leg backward and upward. In Stage B the tendons are being stretched and the muscles in the leg are driving forward, releasing their pent up energy (the muscles will burn oxygen until they run out at which point they will start producing lactic acid to keep providing energy for the leg, which is why your muscles burn when they are tired)
Diffusion.
Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.
Answer:
Worm, Bird, Snakes, Hawks.
Explanation:
Hope this helps in anyway,