The characteristic ____________________ of a radioisotope allows us to determine the age of rocks and fossils using a technique called ____________________.
Fill in the blank(s) with the appropriate word(s).
half-life, radiometric dating
You might also like to view...
Which of the following is a key feature of primates?
A. They have a brain that is large in relation to their body. B. They have mammary glands. C. They are endotherms. D. They give birth to live young.
The presence of which hormone in a mother's
urine indicates that she is pregnant?
a. luteinizing hormone b. follicle-stimulating hormone c. human chorionic gonadotropin d. progesterone e. estrogen
Deforestation:a
retards soil erosion. b. releases carbon dioxide that may contribute to global warming. c. has no effect on the extinction of biological species. d. promotes the preservation of tropical birds. e. is only a threat to tropical rain forests.
A mutation in RTK receptor that allows the receptor to bind the ligand and pair with a wild-type receptor but blocks signal transduction is classified as a ________ mutation,
whereas a mutation that activates RTK pairing signal transduction even in the absence of ligand is classified as a ________ mutation. Fill in the blank with correct word.