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Photography with cameras Nikon D3x, Nikon D300, Canon 50D Image editing with Photoshop |
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Keyword: Humans | Overview - a b c d e f g h i j k l m n o p q r s t u v w x y z | Seite 1 von 4 1 2 3 4 | | | |
| Honey | ...ey contains about 200 different ingredients. Honey bees make honey from nectar or honeydew in order to be self-sufficient. The composition of honey varies depending on what kind it is and it can be liquid or crystalline.
Honey has been used by humans since the Stone Age. Since the invention of sugar extraction from sugar beet or sugar cane , the importance of honey as a sweetener has declined enormously. Nowadays honey is mainly used as a bread spread. However due to its antibacterial pro...
...nd honey leaf.
Honey can be divided into groups according to the extraction method?: From the procedure honey is won there is strained honey, sliced honey, comb honey, drained honey, pressed honey and stamped honey.
Honey can pose a risk to humans. Honey can contain Clostridium botulinum spores. When ingested by infants, these spores can produce a toxin that can cause infant botulism. Pollen existing in honey also can cause allergic reactions. | | |
| The common wasp is found in almost every kind of landscape. In areas inhabited by humans, wasps are considered a nuisance in autumn time. The venom of the wasp may cause allergic reactions. When wasps sting hormones are released and this can encourage other wasps to sting. Due to this a large swarm of this kind of wasp poses a great...
... considered a nuisance in autumn time. The venom of the wasp may cause allergic reactions. When wasps sting hormones are released and this can encourage other wasps to sting. Due to this a large swarm of this kind of wasp poses a great danger to humans. | | |
| | | Horse flies | ...me examples of these species are: twin-lobed deerfly (Chrysops relictus), pale giant horsefly (abanus bovinus), band-eyed brown horsefly (Tabanus bromius), Tabanus sudeticus and notch-horned cleg (Haematopota pluvialis).
The females are drawn to humans and mammals by the smell of their sweat. They feed on their blood, sucking up to 0.2 ml from them. The males feed on nectar. In some species the females live off plants and carrion.
The bite of a horse fly can penetrate clothing and is much mo...
...feed on nectar. In some species the females live off plants and carrion.
The bite of a horse fly can penetrate clothing and is much more painful than the sting of a mosquito due to the larger mouth parts. Horse flies are considered a risk to humans and animals, especially in Africa, as they carry diseases.
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| | Amongst humans, particularly in western industrialized countries, spiders have a bad reputation. This irrational aversion may in some cases lead to mental illness (arachnophobia). Some species of spiders are in fact dangerous to humans, for example, the black widow. In Cambodia, spiders are brutally killed and eaten. However in many Asian cultures, the spider is considered useful because it kills insects. In West Africa, the spider is considered a deity. | | |
| | ...to rear their offspring together and temporarily to protect themselves. Even sleeping, hibernation and guards groups are formed. Bees which live in colonies however, are non–transient , socially sophisticated and almost perfectly organised.
For humans primarily the honey bee is of interest. There are 9 different species : Apis dorsata laboriosa, Dwarf honey bee, Giant honey bee, Western honey bee Asian, Red honey bee, Apis nigrocincta, Dwarf bush bee, Eastern honey bee and the Asian mountain bee... | | |
| | ...bacteria, protozoa, fungi), parasites (Ichneumon wasps, tachina flies, Acarina) and enemies like birds, hedgehogs, shrews, bats, reptiles, spiders, fish, amphibians and even other species of beetle which feed on them.
Beetles are often divided by humans into two groups: those that are harmful and those that are beneficial. Sitophilus oryzae and wheat weevil can cause significant damage to cereal stocks, while the Colorado potato beetle, Meligethes aeneus and Western corn rootworm are able to dest... | | |
| | The green shield bug is mainly found in hedges and on the foliage of trees. Linden, alder, thistles and nettles are the preferred food source of the green shield bug.
The defence secretions of this bug can causeallergic reactions in humans. | | |
| | ...oth sting which they use to inject crippling substances into their prey and to defend themselves (even by spraying poison) and this sting can be used again and again. The Honey Buzzard and the Ichneumon wasp are natural enemies of Vespinae.
For humans the German wasp and the common wasp are especially problematic because these live in the most populated colonies. Wasp stings can cause? allergic reactions, often in conjunction with severe itching or pain. The greater danger is from bacteria, such... | | |
| | Rove beetles | | ...decimate the hatching ants. Even as migrant guests they are to find amongst hunting ants’ armies where it occurs that they ‘ride’ ants instead of walking. Rove beetle have defence glands, the secretions of which can cause blistering and rashes in humans.
Some species of rove beetle can cause damage to strawberries or fruit trees. However, the rove beetle is enormously valuable for the soil and its remineralisation. Furthermore they eat many insects which are regarded as pests in agriculture a... | | |
| | Royal jelly | | ... jelly in Germany has little public support.
Royal jelly and propolis are used as raw materials in pharmaceutical products. However, it is also consumed in its pure form and is a legal food substance. Royal jelly can cause allergic reactions in humans even when it has been processed in some way. | | |
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