“Neuron” is another name for a nerve cell.
Answer:
4
Explanation:
the spinal cord is part of the central nervous system because it helps keep us up right
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The relationship described is predator-prey.
The orca is hunting and eating other organisms, which is known as a predator-prey relationship.
In case you need help with any more of these-
Mutualism is when both animals get something out of the relationship, for example, some kinds of shrimp get the food out of fishes teeth. The fish gets clean teeth, and the shrimp gets a meal.
Parasitism is fairly self-explanatory. This is when a parasite lives and gains from a host, while the host is harmed and could get diseases from the parasite.
Commensalism is when one animal benefits and the other isnt harmed nor benefited. An example of this is the remora fish which clings to the bottom of other fish when it gets tired.
Lastly, Competition. This is when two organisms compete for something they need to survive. For example, two lions could compete for a food source, such as a zebra. Usually, the strongest and fastest organism survives, or wins.
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Good luck with the rest of your assignment!!
When you cut down a tree, there are rings on the inside of the tree. You can count these lines to help determine how old the tree is.
It could be natural selection or genetic drift