Answer: The entire food web
Explanation: Because the small fish eat the plankton and the birds eat the fish, and other things eat the birds etc. etc., technically if the number of phytoplankton and vegetation dropped, it would cause everyone else to have a lack of food
Well the nervous system divides into the central nervous system (CNS) (brain and spinal cord) and the peripheral nervous system (PNS) (everything else). From there, the CNS divides into the autonomic (ANS) (reflex functions) and the somatic (SNS) (voluntary movement) nervous systems. The ANS subdivides into the sympathetic (SANS) (fight or flight) and parasympathetic (PSNS) (rest and digest) nervous systems. Not sure exactly what the question is referring to, but this is a basic layout of all of the main nervous systems.
It's not always available , because its not windy everyday
I don't know which specific examples do you need to include, but I am pretty sure that as a regular animal, squirell might need such resources as <span>food, water, and a habitat. These three points are enough to satisfy basic needs.</span>
What Will Clean a Penny Faster, Water or Vinegar
