Default network
When the brain is unoccupied, an fMRI indicates that blood continues to flow via a web of brain regions called the default network.
The default network is a web of brain regions that have activity that corresponds greatly with each other and different from other networks within the brain. The default network is active when an individual's attention is not concentrated on the external environment and it is measured with the functional magnetic resonance imaging technique (fMRI).
A producer cannot make sugars in the absence of light, the correct option is A.
<h3>What are producers?</h3>
Producers, also known as autotrophs, are lifeforms that produce their own food.
They obtain energy from chemicals or the sun and transform it into usable energy in the form of sugar or food using water.
Plants and algae can produce their own food by harnessing solar energy. These organisms are referred to as producers because they generate their own food.
Thus, the correct option is A.
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The body would start to shut down, reactions would become weaker and slower, you would begin to get tireder and you's slowly be dying. If no fod is onsued within 2-3 weeks, then the brain will have no nutrients and will die
The best answer to fill in the blank is "multilayered membrane."
