Most of the brain's excitatory ionotropic synapses use the neurotransmitter glutamate.
The best correct answer is C.
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The solar system is composed of the sun and the planets.
<h3>What is the solar system?</h3>
The solar system is composed of the sun and the planets. The sun lies at the center of the solar system and the planets move around the earth in concentric circles.
Given that the earth is the only inhabited planet, it holds a central place in the solar system. The moon is a non luminous surface. It reflects the light that hits it from the sun to the earth.
The sun and other stars are the luminous bodies in the solar system.
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Answer:
Figure 3
Explanation:
A mixture is a substance made up of two or more different kind of atoms arranged in such a way that they are not chemically linked or joined. This accounts for the reason a mixture can be separated easily. In the figures attached as an image in this question:
- Figure 1 represents an element because it is made up of only hydrogen atoms chemically bonded together to form a molecule.
- Figure 2 represents a compound because it contains hydrogen and carbon atoms chemically joined together.
- Figure 3 represents a MIXTURE because it contains the oxygen and carbon atoms, which are not chemically joined to one another. As seen in the image, the oxygen atoms are not joined to the carbon atoms.
- Figure 4 represents a compound because it contains oxygen and hydrogen atoms chemically bonded together.
Water is not a very good solvent it not applies to the water.
The answer should be Axon!
