The isotope phosphorus 30 has a half-life of 2.5 minutes you need a 4 g scale of this isotope for an experiment which will take you approximately 15 minutes to prepare in order to have 4 g with experiment begins how much phosphorus 30 should you start with

Select the correct text in the passage. the moving continents affect all subsystems on earth. which sentence identifies a potentially negative consequence of shifting continents? the supercontinent pangaea began to break up about 175 million years ago. [during this process, more coastline was exposed as the landmasses separated]. [the rearrangement and displacement of these huge landmasses resulted in the diversity of plants and animals we see on earth today]. [the movement of the plates sometimes leads to earthquakes and tsunamis]. however, over the long course of earth's history, their effects are usually minimal. in oceans, the plate movements usually lead to seafloor spreading. [seafloor spreading often results in the formation of underwater ranges of mountains].

Which feature of a map shows the relationship between a distance on a map and that distance on earth? key scale grid system compass rose

How does the use of fertilizers impact the environment?