•CALCULATE THE ENERGY AVAILABLE AT EACH LEVEL USING THE 10% RULE•
• PRODUCER
• HERBIVORE
• OMNIVORE
• CARNIVORE

PRODUCER  uses 10000 J

HERBIVORE  uses 1000 J

OMNIVORE  uses 100 J

CARNIVORE uses 10 J

Explanation:

10% of the initial energy is made available for the next level.

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

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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.