Earthquakes
Scientists have spent many years trying to figure out earthquakes. Massive slabs of rock, ...
A coral reef may look like rock, but in fact, it's full of life. A coral reef is like a giant underwater apartment complex with coral polyps living in each unit. Reefs are usually found in warm, tropical waters. Choppy waves bring in food, nutrients, and oxygen. Reefs also need sunlight to grow algae, which provide food and oxygen to animals living there. Although they make up only about one percent of the ocean floor, coral reefs house more than 25 percent of ocean life, including sea urchins, sponges, sea stars, worms, fish, sharks, lobsters, shrimp, octopi, and snails. Corals can be white, pink, red, green, blue, orange, or purple. Beautiful, colorful reefs have existed for millions of years. But coral reefs are in trouble. More than a quarter of them have been destroyed by pollution and careless human activity. Unless something is done soon to save them, all of the reefs could die in the next few decades.
Scientists have spent many years trying to figure out earthquakes. Massive slabs of rock, ...
You're probably familiar with the loud beeping sound on the TV when the Emergency Broa...
The class was moving on to the next area of the zoo, but Freddy asked to stay behind to ke...