Zooplankton
Phytoplankton
Kelp
Reeds
Olfaction
Sight
Hearing
Breathing
Tributary
Wetland
Haboob
Watershed
Mosquito
Whiptail lizard
Fish
Otter
Curved lake
Elbow lake
Oxbow lake
Convex lake
Pond
All of the above
River
Alpha predator
Beta predator
Top dog
Omega predator
Bog
Decomposer
Producer
Composter
A food chain enables animals to communicate to each other within their environment.