1 Pour 1/2 cup of the peroxide into the empty water bottle (Hydrogen peroxide can irritate skin and eyes, so make sure you protect your eyes and skin and let a grown up do the pouring.). 2  Add about 8 drops of food coloring to the bottle (optional).
What is the largest predator? The Largest Predator The Blue Whale. At up to 33.58 meters (110 ft 2 in) in length and 172 metric tons (190 short tons) or more in weight, it is the largest animal ever knownâ¦ to have existed.
Tyrannosaurus rex, one of the largest land predators that ever lived, was even bigger than previously thought, according to a new study. Scientists used computer modeling to virtually weigh the dinosaur king, which went extinct 65 million years ago. Not only did earlier approximations skimp on its size, but the terrifying creature also grew at faster rates than anyone imaginedâas much as 3,950 pounds per year, according to the paperâs authors.