What stage is the first stage of speciation? a. the populations become adapted to different environments and eventually become so different that they cannot interbreed to produce fertile offspring. b. the populations are isolated and thus do not interbreed. c. the populations become totally separated from one another. d. the populations successfully interbreed.

The image shows a process that releases nuclear energy which statement best identifies the process shown the process must be fusion because energy is released the process must be fusion because of have your nucleus formed a smaller nuclei the process must be fission because a large nucleus breaks into smaller nuclei the process must be fission because neutrons are formed

Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust

Calculate the mass of 0.750 mol of the following substance. na3po4. , i'm not quite sure on how to set up the problem to solve! : (