What do the meninges and the cerebrospinal fluid have in common?
Both help information pass through the spinal cord.
Both are involved in protecting the brain.
Both affect sleeping and waking patterns.
Both are involved in physical coordination and balance.

im not in connections yet but i might can you some questions. what grade are you in?

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.