Radioactive C14 was used to determine the geologic age of old wood preserved in a glacier. The amount of C14 in the old wood is half the normal amount of C14 currently found in the wood of living trees. What is the geologic age of the old wood?

Remind you that one half life of C14 is “5.7 x 10^3” years old

Give an example of a trait that is controlled by more than one gene.

Along what geographical feature are most of the oil producing regions located

True or false: (a) the strings of little red dots represent carbohydrates. (b) the model is called a bilayer because there are two main types of molecules present, lipids and proteins. (c) the many black lines represent amino acid tails. (d) this model shows membrane transport. (e) the blue ovals are hydrophobic. (f) the blue ovals represent phospholipid heads.