PLEASE HELP ME When a neurotransmitter (ligand) binds to the ligand-gated ion channel of a postsynaptic neuron, the shape of the channel protein , allowing ions to flow the cell. These ions are messengers that perpetuate the signal transduction of the nerve signal.

it's unlikely a majority of a large population would agree on issues

hope this : )

1. a host loses nutrients to a parasite

2. a parasite only benefits when the host is alive (cause if the host dies the parasite dies with it )

3. producers to consumers

4. the tapeworm is a parasite

5. they convert energy from the sun (photosynthesis)

6. sunflower-robin (i think im 80% sure)

7. producer

8. consumer

9. prey

10. fresh water snails ( cause the green algea is the producer and the snails are the primary consumers and the small fish consumer so is the big fish)

the contamination

we are putting to many trash.