Blood vessels traveling within the space deliver oxygen and nutrients to the spinal cord

Blood vessels present within pia mater space transports oxygen and nutrients to spinal cord.

Pia mater is internal layer of meninges which is in direct contact with and intently covers spinal cord and cerebral cortex. The pia mater has a rich inventory of veins, which give supplements and oxygen to sensory tissue. This layer additionally holds the choroid plexus, a system of vessels and ependyma which is involved in production of cerebrospinal liquid.  

Pia mater covering the spinal line is made out of two layers, an external layer comprising of collagen strands and an internal layer that encases the whole spinal rope.  

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.