Answer:
by looking at their physical features, the fossil record, and dna sequences
Answer: Subarachnoid
Explanation:
The space in the meninges below the arachnoid membrane and above the pia mater contains the cerebrospinal fluid. Cerebrospinal fluid is produced by choriod plexus( a cluster of capillaries) from the blood. Blood vessels traveling within the subarachnoid space deliver oxygen and nutrients to the spinal cord.
I am not sure but here is a link to help you :)
https://www.ncbi.nlm.nih.gov/pubmed/22322095
They have more little impact because they are renewable
Answer:
inclusive fitness, parental investment, eugenics
Explanation:
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