Radioactive isotopes in fossils decay at a constant rate. the ratio of radioactive isotope to stable isotope can be examined to estimate the age of the fossil or the rock it was found in. this is an example of dating. a. magnetic b. relative c. precambrian d. absolute

Drag each label to the correct location. each label can be moved more than once match the properties with the subatomic particle

How many chromosomes does each human cell contain? a. 23 chromosomes b. 26 chromosomes c. 43 chromosomes d. 46 chromosomes

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers