If 1/4 of the parent isotope is left in the rock how many half-lives have passed? GIVING BRAINLEST TO WHOEVER ANSWERS FIRST WITH THE RIGHT ANSWER!!!

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

What happens when light is scattered?

7. in the cycle, a virus integrates its dna into the host's dna, and its dna is replicated when the host dna is replicated. a. infectious b. retroviral c. lysogenic d.lytic