How do cactuses survive in the desert? They have adaptations in their roots, leaves, and stems that help them retain water and survive in desert conditions. There are about 2,000 different types of cactus. All types of cactus are native to the Americas, except for the mistletoe cactus, which is found across Africa. The main […]
#624 How do cactuses survive in the desert? Read More »
What are bruises? They are where blood vessels near the skin’s surface are broken after an impact. There are three layers in the skin: the epidermis, dermis, and hypodermis. The outer layer of our skin, the epidermis, doesn’t have any blood vessels. All of the blood vessels are in the dermis. New skin cells grow
#623 What are bruises? Read More »
Why do Greenland sharks live so long? Partly because of their very slow metabolism. Greenland sharks are large sharks that live in the northern parts of the Atlantic Ocean and in the Arctic Ocean. They live near Greenland, hence the name. They can grow up to 7 meters in lengths and they can weigh up
#620 Why do Greenland sharks live so long? Read More »
What causes the “wall” when running? It is caused by your liver and muscles running out of glycogen. All of the chemical processes in our bodies only work if we can supply them with energy. We get that energy from the food we eat. Whenever we eat anything, it is broken down in our intestines
#618 What causes the “wall” when running? Read More »
Why do hyenas have long necks? To give them more strength and leverage for when they eat their food. There are four types of hyena. These are the brown hyena, the aardwolf, the spotted hyena, and the striped hyena. The hyena we most closely associate as a hyena is the spotted hyena. They all vary
#616 Why do hyenas have long necks? Read More »
Is cryosleep possible? In theory, yes, but not for the length of time needed to travel anywhere decent in space. The idea behind cryosleep is to put astronauts into a state of suspended animation for the length of time it would take for them to reach wherever they are going. The advantages of this are
#615 Is cryosleep possible? Read More »
How much can a bladder hold? Approximately 500 ml in women and 500 ml in men. The bladder is an expandable muscular sac. It has an inner lining of cells, three layers of muscle, a layer of fat, and then another layer of cells. It is connected to the urethra at the bottom and has
#614 How much can a bladder hold? Read More »
Why does bread need yeast? Bread doesn’t have to have yeast and there are many breads made without it. However, if you want the bread to rise, then it needs yeast. Yeast is a single-celled organism called Saccharomyces cerevisiae. It is a fungus, which means they make their energy by decomposing other things. There are
#612 Why does bread need yeast? Read More »
Why can a peregrine falcon fly so fast? Because of their wings, their feathers, their breastbone, their heart, their lungs, and a few other things. Peregrine falcons are one of 40 species of falcon. They are about the same size as a crow and they are birds of prey. They eat medium sized birds, such
#607 Why can a Peregrine falcon fly so fast? Read More »
How can an eagle see so far? Eagles can see about eight times farther than humans because the cones in their eyes are very small and tightly grouped together. There are 68 different species of eagle spread across the world. They are birds of prey that hunt by swooping down on their prey from high
#605 How can an eagle see so far? Read More »
