The brain and spinal cord are covered by
a. synovial membranes.
b. visceral membranes.
c. meninges.
d. cerebrospinal fluids.

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.

Which of the following is not associated with invasive species?

Which of the following is an abiotic factor in an ecosystem? a. bacteriab. airc. niched. grass(abiotic=non-living) me !