Answer:
Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. ... Movement across a selectively permeable membrane can occur actively or passively. For example, water molecules can move passively through small pores on the membrane.
Explanation:
Answer:
As energy moves through trophic levels in an ecosystem the amount that is available decreases. ... A: Energy flows in a food web by being transferred to and between organisms as they undergo photosynthesis, are consumed by another organism, or decompose.
Answer:
Cerebrospinal fluid circulates within the ventricles of the brain and in the subarachnoid space is called Cerebrospinal fluid circulation
Explanation:
CSF is formed within the ventricles by small, delicate tufts of specialized tissue called the choroid plexus
the major pathway of CSF flow. Beginning in the lateral ventricles, CSF flows through two passageways into the third ventricle. From the third ventricle it flows down a long, narrow passageway (the aqueduct of Sylvius) into the fourth ventricle. From the fourth ventricle it passes through three small openings (foramina) into the subarachnoid space surrounding the brain and spinal cord
Hello There :D
Answer: <span>B. hypothalamus
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Reason: <span>The </span>part of the brain<span> which </span>controls hunger<span> is the Hypothalamus. </span><span> The hormones produced here control</span><span> temperature, thirst, </span>hunger, sleep, mood.
I hope I helped
-Chris
