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.
Explanation:
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Hello! The correct answer would be D. Cnidarians. :)
-Cheerio, and have a nice day!
Answer:
Biotic:
- Bear
- Moose
- Trees
- Eagle
- Bird
- Fish
- Ducks
- Otter
- Ferns
- Grass
- Butterfly
Abiotic:
Explanation:
Remember that biotic factors are living organisms while abiotic factors are things that are non living organisms.
Hope this helps.
Answer:
Explanation:
There are many examples of fossils found on separate continents and nowhere else, suggesting the continents were once joined. If Continental Drift had not occurred, the alternative explanations would be:
The species evolved independently on separate continents – contradicting Darwin’s theory of evolution.
They swam to the other continent/s in breeding pairs to establish a second population.
