If a sample of radioactive material contains 94% of strontium-87, what is the absolute age of the sample?

Were the first to arrive in nowth america. asian french

Topographic maps are used to measure a-composition b-movement c-elevation d-texture

Which of the activities listed below could limit global warming by slowing the increase in atmospheric carbon dioxide levels? view available hint(s) select all that apply. a. replacing fossil fuels with nuclear energy b. burning vegetation to clear land for agriculture c. limiting soil erosion so organic matter takes longer to decompose d. choosing a fuel-efficient car, or bicycling to school or work e. using more electrical appliances and cars f. cutting down forests to build houses