Practice problem
Which event would prove that two animals are from different species?
Two animals are kept in a pen and they don't try to reproduce.
Two animals are kept in a pen and eventually have a hybrid offspring.
Two animals are kept in a pen and eventually have a hybrid offspring lives a healthy life but cannot reproduce.
Two animals are kept in a pen and eventually have several hybrid offspring. These offspring break out and start breeding in the wild.
Type a concept, like “slope” or “photosynthesis”.