4. Think about a food web in a marine, fresh-
water, or terrestrial ecosystem. Describe a
producer-consumer relationship, a predator-
prey relationship, and a parasite-host
relationship within the food web. sc.7.l.17.1,
SC.7.L.17.2

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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.

the endomembrane system i think

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.