How do mammals keep warm in the winter? They have several different methods. Here are some of them. Many mammals stay warm by putting on more fat. Sea mammals have to cope with very cold ocean water and it is harder to stay warm in water than it is on land. If you are naked […]
#424 How do mammals keep warm in the winter? Read More »
Why do fish have scales? For protection, for camouflage, and to help them swim faster. There are four basic types of fish scale, but there are many subdivisions within each category. These are the main ones: Placoid scales. They are found on fish such as sharks and manta rays. They are very similar to teeth,
#414 Why do fish have scales? Read More »
How do throat lozenges work? They lubricate the throat, suppressing the irritation. Why do we get sore throats? The most common cause of sore throats is viral infections. The second most common is a bacterial infection. The common cold is a good example of a viral infection and strep throat is a good example of
#413 How do throat lozenges work? Read More »
How do fish breathe underwater? Fish use their gills to take oxygen out of the water. Why do we need oxygen? Most living beings need oxygen to create energy. All animals need to respire, which is the process of releasing energy by breaking down glucose. There are two ways to respire: aerobic and anaerobic. Aerobic
#412 How do fish breathe underwater? Read More »
Why don’t cats knock things over? It turns out that cats have whiskers on their legs as well as their faces. When I’m making a line of dominos with my daughter, it is inevitable that either she or I will knock them all over. We both seem to have no sensory perception. And yet, my
#411 Why don’t cats knock things over? Read More »
Do ants need to sleep? Ants do actually sleep, but not all at once. There are very few living organisms that don’t need to sleep. However, they all do it in different ways and there are many different definitions of what sleep is. Bacteria don’t sleep. Although they are tied to a circadian rhythm and
#405 Do ants need to sleep? Read More »
Why do we get a headache when we are dehydrated? You get a headache when you are dehydrated because your brain shrinks and pulls away from the sides of your skull. The human body is about 60% to 70% water. Some parts of the body contain more water than other parts. The blood and the
#400 Why do we get a headache when we are dehydrated? Read More »
Can you cure male-pattern baldness? In male-pattern baldness, the hair follicles are still present on the scalp, they are simply dormant. What is male-pattern baldness? It is hair loss that most commonly happens to males and usually follows a specific pattern. It begins at the temples and at the top of the head. The hair
#398 Can you cure male-pattern baldness? Read More »
How does caffeine stop you from feeling sleepy? Caffeine stops you from feeling sleepy by blocking the action of adenosine on its receptors. So, why do we get sleepy? A lot of research has been done into why we need to sleep, but nobody has come up with an answer. We obviously do because if
#396 How does caffeine stop you from feeling sleepy? Read More »
Why are rabbit ears so long? A rabbit has big ears to cool itself down, not just to hear predators. Rabbits are herbivores and are obviously preyed upon by various other animals. Their large ears can swivel independently and can pick up sounds from up to 3km away. They can turn each ear 270 degrees,
#395 Why are rabbit ears so long? Read More »
