Could you help me fill in the blanks? Greetings and salutations to you our most honored guests from a far away place! Life on Earth has changed a great deal over the past 4 billion years here is what we know so far and the evidence that backs it up is .

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

you did not attach the discourse, but i assume it to be the discourse on the origin and basis of inequality among men (the original titile in french is: "discours sur l'origine et les fondements de l'inégalité parmi les hommes"), also know as "second discourse". in this discourse, jean-jacques rousseau emphasizes that private property is the basis of all inequalities.

therefore, what enabled the old regime to maintain as long as it did was private property.

the answer is b. glad to .

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.