About how many years ago do scientists suggest that the earth cooled enough for water vapor to condense.

A) 20 millions years

B) 4.6 billion years

C) 4.4 billion years

D) 5.5 billion years

List the three scientific principles of sustainability and give an example of each

A hybrid flower would have a genotype of ___ 1. TT 2. tt 3. Tt

What are two reasons why terrestrial plants formed closer to the sun after the supernova event that initiated the formation of the solar system

What do you think really happened to the people of Easter Island? Do you believe nature is valuable to human beings? Why or why not?

Which of these are functions of the female reproductive system but not the male reproductive system? Select three options. A) Nourishes a developing baby. B) Produces reproductive cells. C) Protects the developing offspring.

A certain metabolic pathway can be diagrammed as, where a, b, c, d are the intermediates, and x, y, z are the enzymes that catalyze the reactions

A client has activated the complement system during an inflammatory response to an injury. when planning care, which information should the nurse remember about which substance activates complement?

Which of the following is a product of the Krebs cycle glucose oxygen carbon dioxide or lactic acid?

What's the role of the complement in the phagocytosis?

What 3 factors can affect tissues