Biology

Boy Scouts David and Grace had an important mission. In March they were tasked with hiding a treasure in a forest for their younger friends. They thought of a trail which started at the clubhouse than went across the town and over a footbridge to the forest. The younger mates were supposed to follow azimuth instructions and descriptions of environment. David and Grace chose a beautiful hiding place for the treasure. They hid it into an old tree stump which was surrounded by ornaments made of flowers in blossom of various colours: white anemone, purple fumewort and yellow lesser celandine.

Mrs. Westwood lives in a small, calm village. She has been in retire for two years now thus she has plenty of time for her hobby – gardening. She is very proud especially of her geraniums which are admired by all the inhabitants of the village. Mrs. Westwood has the geraniums on all her window ledges and also hanging on the fence so that everyone walking by can see them.

Mrs. Westwood lives in a small, calm village. She has been in retire for two years now thus she has plenty of time for her hobby – gardening. She is very proud especially of her geraniums which are admired by all the inhabitants of the village. Mrs. Westwood has the geraniums on all her window ledges and also hanging on the fence so that everyone walking by can see them.

Home gardening has become popular hobby recently. Those who cannot grow their own vegetables, spices and fruits in a garden, use the option to purchase such crops from small farmers or from so-called organic farms. Growing and selling crops under the name of bio has a lot of rules, one of them is limited artificial fertilization. Mr. Rabbit would like to grow his own vegetables, also, if possible, with a minimum of artificial fertilization. The best is to have land with soil containing many soil organisms. Mr.

Mr. Firman lives in a family house surrounded by a large garden that he cares for. In one part he grows vegetable and fruit, in other part there are fruit trees, and in the back there are old broad-leaved trees and some conifers. While he was reconstructing the front fence, Mr. Firman decided to make a hedge and with spruces. These trees are quite cheap and grow fast. In a half year it was obvious that spruces do not thrive, although they are watered additionally. In the backyard there are lot of trees with no sign of suffering, so why do the spruces grow badly?

„150/95, please, make note into patient folder“, asked Doctor Smith his nurse. He turned to the patient and says: “So, Mr. Martin, your blood pressure is too high. And, last time, it was high as well. From now, no smoking, no alcohol drinking and tell your wife not to use salt very much.” Mr. Martin was surprised and tried to compel Doctor to allow something:  “But, Doctor, just one cigarette a day.“ However, Doctor Smith was unyielding: „No, no, nothing is possible. Do you want to have a stroke? Or a heart attack? Or, you want to destroy your kidney?

The heart is crucial, irreplaceable for humans because it works tirelessly from birth to death. Its role is essential – heart ensures blood circulation in the bloodstream by contractions and the supply of oxygen to the cells, which is used for energy production and for life at all. The heart works like a regular pump never-ending, with which we can see some phases. These phases correspond to the gradual withdrawal of ventricular fibrillation. As for pumping water, also the heart is influenced by pulse - the rhythmical electrical discharges in the right atrium.

Imagine, you are walking in the summer in the country with lots of water sources, rivers, lakes, ponds and rivulets. You may remember that the water did not look the same. Some water seemed to be quite clean, some was covered with oily spill, other with lots of plants or it seemed just green.

But not everything what is green, is good for nature. Water with lots of plant organisms, like algae, is possible threat for other organism. How is it possible and is the big amount of plants in water natural for water?

Jane and Sue are friends and they have not met each other for a long time. Both of them love flowers and plants, especially Sue has apartment full of plants; they are everywhere, in the living room, in the bedroom, in the kitchen. When Sue came to visit Jane, Jane had no flowers in the bedroom. When Sue asked about it, Jane explained immediately: “In the dark at night, flowers do not produce oxygen, in contrary, flowers consume it. Hence, sleeping people cannot breathe very well and sleep is not very good. And, if the windows are closed, people can be in danger.” Can it be true?