Answer:
E-----> C------>D------->A------->B
Explanation:
The cerebrospinal fluid (CSF) is the fluid of the central nervous system. It allows for buoyancy as the brain is immersed in the fluid, protection, excretion of waste products from the brain and many more. The production of CSF is by the CHORIOD PLEXUS in the lateral, third and fourth ventricles. The CSF flows through the interventricular foramen from the lateral to the third ventricle and from the third ventricle into the fourth ventricle through the cerebral aqueduct which connects them. The CSF then flows into the subarachnoid space. Absorption of CSF into the blood is by the arachnoid villi and then the CSF enters the blood.
Answer:
Chemical nutrients and energy tend to flow in the same direction for most of an ecosystem. The big difference is that the chemical nutrients are ultimately recycled in the ecosystem while the energy is ultimately lost from the ecosystem to the universe at large. Energy in any ecosystem ultimately comes from the Sun
Explanation:
Answer:
A single phospholipid molecule has a phosphate group on one end, called the “head,” and two side-by-side chains of fatty acids that make up the lipid “tails. ” The phosphate group is negatively charged, making the head polar and hydrophilic, or “water loving.” The phosphate heads are thus attracted to the water.
Explanation:
Its the Eccentricity of the earth. (shape of Earth's Orbit around the sun, whether it is more circular or ovular.)
