Quinn and Quade had to make a model of the Earth's four main layers using items from around their house. They did not
have to include the lithosphere in their project. The layers had
to accurately represent the density of each layer in relation to
each other. They gathered several items from around the
house. The materials are listed below.
Items gathered:
small bouncy ball, marble ball, tennis ball, small iron ball, large
iron ball, slime, thin styrofoam sheet, styrofoam ball,
cardboard, clay, play-dough, icing.
Choose from the list of materials to create a model of the Earth
that represents the density of each layer. Identify what each
item would represent in your model and explain why you chose
them.

Skulls of (1) modern gorilla, (2) australopithecus afarensis, (3) homo erectus, (4) homo neanderthalensis, (5) homo sapiens based on the diagram, which of the following best describes ways in which the physical appearance of h. neandertalensis and h. sapiens differ? (2 points)

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.

Suppose you use three different scale to weigh a bag of oranges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of oranges is 2.153 lb. which of the following best decribes these results?