Answer:
The ozone layer is a thin part of the Earth's atmosphere that absorbs almost all of the sun's harmful ultraviolet light. "Ozone holes" are popular names for areas of damage to the ozone layer. This is inaccurate. Ozone layer damage is more like a really thin patch than a hole
Explanation:
Source: National Geographic
A chemical within the postsynaptic neuron that is indirectly activated by synaptic activity and interacts with intracellular enzymes or receptors is second messenger.
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What is second messenger?</h3>
A second messenger is a substance whose release within a cell is promoted by a hormone and which brings about a response by the cell.
This chemical is within the postsynaptic neuron that is indirectly activated by synaptic activity.
Thus, a chemical within the postsynaptic neuron that is indirectly activated by synaptic activity and interacts with intracellular enzymes or receptors is second messenger.
Learn more about second messenger here: brainly.com/question/13910720
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Answer:
Because Lumbricina ( Earthworm ) Is a living, breathing, animal
Explanation: