The analysis of samples from layers G and F indicates the following proportions of parent isotope to daughter product. If the half-life of the parent is known to be 75 million years, what are the ages of the two layers?

Which process collects sample soils from particular areas of a site? a.) repetitive sampling b.) restorative sampling c.) random sampling d.) representative sampling

Nike lives in an area that has a south-facing slope. the temperature in his area is always high. which of these abiotic factors is responsible for high temperatures in nike’s area? a. nutrients b. soil c. water d. topography

Based on the information in the graph, what can you conclude about humans in the world in general?