Determine whether the following statements about sympatric speciation are true or false. a. Sympatric speciation only occurs in areas where there is local variation in environmental resources. b. A dam dividing a fish population could lead to sympatric speciation.

The true statement is - Sympatric speciation only occurs in areas where there is local variation in environmental resources

Explanation:

Sympatric speciation means the evolution of new species from an ancestor species which are occupying in the same area and no geographical barrier takes place. Overlapping of ranges takes place to the organism and old and new        species are living i the same geographical region.A dam diving a fish population could lead to allopatric speciation where geographical barrier causes formation of new species which are completely different from their ancestor species.

Mantle convection is the process that drives plate tectonics. the theory of plate tectonics states that the crust is divided into plates that float on the semi molten mantle below. the circular motion of the magma as it slowly rises and falls or move though convection cells drags the plates along causing them to move. the heat source in the lamp would represent the earth's core. the core is the source of energy that drives convection in the mantle. the lava represents molten magma under the earth's surface. if the lava lamp had floating pieces they would move as the circular motion of the lava in the lamp as it rises and falls would move them along the surface. these floating pieces would represent pieces of the earth's crust. 

Had a democratic form of government