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Hipervinculo Química
People have been dyeing fabrics and other items for many years. In fact, the earliest written record of the use of dye is from thousands of years ago in 2600 BC! In 715 BC, Romans were already dyeing ...
Hipervinculo Química
Even though every type of soil has the potential to stain clothes and dirty fingernails, a clever soil sleuth can find subtle differences when equipped with a soil test kit and a healthy amount of cur ...
Hipervinculo Ciencias de la Tierra y Medioambiente
Composting is the process that turns vegetable scraps and other organic into lovely soil. Carbon and nitrogen are essential ingredients in your compost. Carbon-rich are called brown , and nitrogen-r ...
Hipervinculo Tecnología
Future engineers, unite! Discover how to keep a sandcastle’s bridge from falling into the moat.What’s the best way to design a bridge in the sand?It is an educational content by education.com.By click ...
When you send your trash to the landfill, what happens to it? It may get buried under loads of landfill waste. If some of your waste is organic material like vegetables and fruit, this means that it w ...
Hipervinculo Biología
There’s about to be a baby boom! In this experiment, you’ll draw marbles from two different cups to create a really big pretend family of boys and girls.How did you become a boy or a girl? It happened ...
Hipervinculo Biología
In the winter, there’s a big chill up in the Arctic, and arctic tundra animals need to be tough to stay warm. How do they adapt to the extreme cold?The body mass index (BMI) is an approximate measure ...
You grow, plants grow, and yes—rocks grow too! They just grow very slowly.The earth is made up of different rocky plates, kind of like a big jigsaw puzzle. Together, all of this rocky jigsaw puzzle is ...
Hipervinculo Ciencias de la Tierra y Medioambiente
When it’s raining hard, those raindrops look like they’re bouncing up and down on the sidewalk. What are they really doing, and how does the size and height each drop make it splash in different ways? ...
Hipervinculo Biología
What’s hot and cold and dry all over? It’s the desert! The desert is a place of extremes. In this activity, you’ll build a desert food web and discover what plants and animals can survive in these cha ...
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