What type of organism is missing from the food chain?
a) an organism that would eat the bear.
b) organisms that would feed off of the flies.
c) organisms that can convert the sun's energy into a useable form of energy.
d) there has to be more than one type of organism at the bottom of the food chain.

Answer is C i just got this answer on usatestprep

straight or amphibians are homeothermic to thermal

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.