Beavers are descendants of land-dwelling rodents similar to rats. The beavers however have adapted their body shape to live in water bodies like ponds and lakes. This can be hypothesised by saying that the early rodents or the ancestors of beavers were forced to find food in the waters. They lacked the flat tail and the webbed feet. With time the need to increase their ability to catch fishes and floating insects, the rodents with flatter tail and a bigger flat webbed feet gradually evolved. The rodents with flatter tails and webbed feet became adjusted to the life on water and became the modern day beavers.
The arrival of a neural impulse at the axon terminal causes the release of neurotransmitter from the synapse.
<h3>What are neurotransmitters?</h3>
A neurotransmitter is indeed a signaling molecule that a neuron secretes to affect some other cell all over a synapse.
The cell that receives the signal, which could be any major body part or target cell, could be another neuron or a gland or muscle cell.
An action potential travels the length of an axon and causes neurotransmitter release at the synapse.
The neuron can interact with other neurons thanks to the action potential and subsequent transmitter release.
Thus, the correct answers are neurotransmitter and synapse respectively.
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Answer:
Explanation:A circle is merely a special case of an ellipse. However, the planets do not quite move in ellipses either. The increased kinetic energy of a planet as its distance from the Sun decreases causes it to behave as though it had a greater mass, which results in the point of the orbit furthest from the Sun precessing.
