What type of speciation occurs when a plant population becomes reproductively isolated while living with its parent population?

subspecies

subpopulation

sympatric

allopatric

The image shows embryos of three vertebrate classes

The deserts of the sahara and australia are associated with

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries