A sample originally contained 1. 28 g of a radioisotope. It now contains 1. 12 g of its daughter isotope. How many half-lives have passed since the sample originally formed? 3 4 8 16.

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?

When rutherford performed his metal foil experiment, he was surprised that most of the alpha particles

How does climate change affect producers?