Life on Earth flourishes in infinite variety. Scientists to date have identified almost 2 million species populating our biosphere. Can you guess how many identified species exist within each of the major categories of life?

Below are eleven boxes containing icons that represent plants, animals, and other major categories of living things. Match each icon to the appropriate number representing the amount of identified species within that category of life by dragging and dropping the icon into the square above the number you think is correct. When you have placed all 11 icons, correct answers will be outlined in green and incorrect answers in red. Continue to shift around incorrect answers until all are correct.