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Sladkaya [172]
3 years ago
12

one hypothesis regarding the extinction of dinosaurs is that a meteor hit the earth causing an explosion so powerful that dust b

locked out the sun. Consider the theory above and explain why would this have caused a mass extinction
Biology
1 answer:
Katen [24]3 years ago
7 0

If the sun is blocked out, plants will not have sunlight to perform photosynthesis which means they will eventually die. If plants are gone, then other creatures and animals that depend on plants will also die. Us humans depend on not only plants, but also animals as part of our food source which means that we will also slowly die, thus causing a mass extinction.

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____________ is the process by which inhibitory transmitters cause the inside of the neuron to become more negative.
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Answer:

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Explanation:

At the synapse, neurotransmitters bind to neurotransmitter receptors in the postsynaptic neuron’s plasma membrane. This results in the opening of the ions channels and the flow of specific ions to change the voltage across the membrane. An inhibitory neurotransmitter inhibits the firing of the action potential by making the inside of the membrane more negative. It is called hyperpolarization (inhibition).

It may occur when the neurotransmitter opens the Cl– or K+ channels to allow the movement of chloride ions into the cell while permitting the outward movement of potassium ions to make the inside of the cell more negative.

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