Sometimes, new but well-tested experimental result may go against commonly accepted scientific ideas. which statement best justifies the need to revise the existing ideas when this happens? a) scientific theories continually change over a period of time. b) a scientific theory must explain as many findings as possible. c) accepted scientific ideas are usually based on the latest experiments. d) the new results usually show that the accepted ideas were completely wrong.

How does pregnancy begin? a) a placenta forms in the uterus b) a sperm reaches an egg in the fallopian tubec) the blastocyst differentiates into two cell types d) contractions begin in the uterine wallapex

Taq polymerase is an enzyme isolated from the organism thermophilus aquaticus. this organism has been found living in the hot springs of yellowstone national park. this enzyme is used to copy human dna from crime scenes. most reactions are performed at ranges similar to those of the human body; however, what considerations should be made for optimum use of this enzyme? view available hint(s)taq polymerase is an enzyme isolated from the organism thermophilus aquaticus. this organism has been found living in the hot springs of yellowstone national park. this enzyme is used to copy human dna from crime scenes. most reactions are performed at ranges similar to those of the human body; however, what considerations should be made for optimum use of this enzyme? the enzyme will not work on human dna. nothing should be altered. the ph should be decreased. the temperature should be raised.

In which state was more than 100 billion tons of coal mined in 2005?