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Digestive enzymes help your body break down your food. It’s hard to obtain many human digestive system enzymes (without vomiting, that is!), but luckily, one of them is sold as a tablet in many drug s ...
Hipervinculo Biología
Have you ever seen a chef taste a newly created sauce? First, she might smell it, because a lot of taste is actually smell. Then, she might use a spoon and make sure she tastes the sauce in several sp ...
Hipervinculo Física
The first thing many kids do when they get home from school is open the refrigerator. Is your refrigerator door covered with cards, photos and papers? You probably already figured out that refrigerato ...
Hipervinculo Ciencias de la Tierra y Medioambiente
Have you ever woken up after a clear summer night to find the grass is wet, even though you know it didn’t rain overnight? The moisture on the grass is called dew, which forms when water in the form o ...
Hipervinculo Biología
Have you ever noticed the tiny fruit flies flitting around your fruit bowl in the summertime? Did you know that they have been used for genetic research for nearly a hundred years? Genetics is the stu ...
Hipervinculo Biología
Has your flashlight ever stopped working because the batteries were dead? It’s no fun walking around in complete darkness. Batteries are everywhere—in our toys, in our cars, in our flashlights and cel ...
Hipervinculo Química
Sugar makes any dessert an extra scrumptious treat, but what happens when you add a bit of science fun to the sweet tasting substance and start heating sugar? Be a chemist for a day and study the simp ...
Hipervinculo Biología
Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints! In this project, you'll investigate fingerprints' swirls and swoops -- and you'll need ...
Hipervinculo Física
You might have heard of the difficulties divers face when they descend into the ocean depths. Before a person can scuba dive, she needs to have many hours of instruction and training. Divers can exper ...
Hipervinculo Física
Heat energy is constantly being transferred from one substance to another. Heat energy always moves from the hotter material to the colder material. When you hold an ice cube, it might feel like the c ...
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