3. A rock sample contains Tritium 3 which has a half life of 12 years. How many half-lives have passed after 48 years?

Some technological solutions to problems like global warming meet the specific needs and situations of local communities. an example from india involves converting the solid waste from cattle into clean-burning fuel for cooking. this reduces the amount of greenhouse gases, specifically methane and carbon dioxide, released into the environment from wood fires. when evaluating the feasibility of implementing this solution, computer models are used to weigh costs against benefits. what factor is least likely to impact the decision on adopting this technology?

Which of the following forest management practices is best for reestablishing areas of forest?

What goes in and out of a cell respiration?