Between each presynaptic and postsynaptic neuron is a that is the fluid-filled space between them. Each presynaptic neuron releases that binds with receptors in the segment of a postsynaptic neuron. The channels of the receptive segment open when these molecules bind. Specific ions then cross the membrane, initiating a potential in the postsynaptic neuron. This local potential is a small voltage change in the potential. Graded potentials that occur in postsynaptic neurons are specifically called potentials.

The correct terms or fillers are -

1. Synaptic cleft

2.Neurotransmitter

3. Postsynaptic

4. Gated

5. Graded

6. Resting membrane

7. Receptive

Explanation:

Between each presynaptic and postsynaptic neuron is a Synaptic cleft  that is the fluid-filled space between them. Each presynaptic neuron releases Neurotransmitter  that binds with receptors in the Postsynaptic  segment of a postsynaptic neuron. The Gated  channels of the receptive segment open when these molecules bind. Specific ions then cross the membrane, initiating a Graded potential in the postsynaptic neuron. This local potential is a small voltage change in the Resting membrane  potential.

Graded potentials that occur in postsynaptic neurons are specifically called  Receptive potentials.

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.