The innermost meninx that protects the brain and spinal cord is the

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.

youre right there are

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.