Two species of cacti in the same desert are similar in appearance. If these plant species are unrelated, the theory that BEST explains why they are similar is

🎲 Try a Random Question  |  Total Questions in Quiz: 50  |  🧠 Study this quiz with Flashcards
This question is part of a full practice quiz:
CLEP Natural Sciences Exam Practice Test — practice the complete quiz, review flashcards, or try a random question.

The CLEP Natural Sciences Exam contains 120 multiple-choice questions and has a 90-minute time limit. 


Two species of cacti in the same desert are similar in appearance. If these plant species are unrelated, the theory that BEST explains why they are similar is