In addition to taste, smell is also important when we understand what it is we eat. The bakery smells good of all freshly baked bread. While the smell from a trash can on a hot summer day can make us feel bad.
The brain sends signals out to our muscles so we can walk or move, so-called will-controlled nerve functions. But the brain also controls non-will-controlled nerve functions, such as breathing and the heart beating ...
The human body consists of tiny tiny cells, together they become billions of cells. And they all need nutrition and oxygen to function. It is through the blood that oxygen and nutrients are transported out to all the cells of the body. In other words, the bloodstream is the body's own built-in transport system.
Anyone who has a greenhouse knows that already early in the spring it gets much warmer inside the greenhouse than outside when the sun shines in through the glass and heats the air. The glass then prevents the hot air from disappearing. This is the origin of the term greenhouse effect. Target group: from 9 years, Duration: 4 minutes.
Nature can be infinitely beautiful with its colors and showy plants. But among fragrant flowers and green leaves, we easily forget that plants are an absolute necessity for life on earth. The green plants give us both oxygen to breathe and food to eat, directly or indirectly. It is through the process called photosynthesis that the green plants can convert carbon dioxide and water into glucose and oxygen and that with the help of sunlight. Target group: From 12 years, Duration: 3 minutes.
Where do we humans really get the energy we need? Well, the energy we get from the sun and it is photosynthesis that with the help of energy from the sun converts carbon dioxide and water into oxygen and dextrose or glucose as it is also called. When we then eat, the glucose in our cells is converted into energy, water and carbon dioxide. It can be said that this is photosynthesis but vice versa. Target group: from 12 years, Duration: 3 minutes.
The greenhouse effect is a natural process that regulates the temperature of the earth and where the greenhouse gases, which are present in the atmosphere, make that process possible. Increasing greenhouse gases have an increased greenhouse effect. Target group: from 12 years. Duration: 5 minutes.