How many half lives will have passed if 7500 atoms of carbon-14 remain? How old would the rock be? ANSWER QUICK PLSS (the topic is actually integrated science but they didn't have that option :/)

Which strategy is an example of how companies may upgrade themselves to meet changing customer preferences? a. doing door-to-door sellingb. using billboards to advertise the productsc. making online shopping services availabled. giving discounts on products

All vaccination should(n’t) be mandatory! 1.at least 5 sentences explaining 2.why? 3.in the end summarize the sentence

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?