Quality seedlings are essential for good growth and performance of vegetable crops. Hence‚ the practice of seedling production is emerging as a profession and commercial activity. During the past‚ as most of the vegetable varieties were open pollinated‚ farmers produced the seedlings at a relatively low cost by preparing their own nursery beds. However‚ due to increase in demand for seeds of hybrid varieties which cost much more than the open pollinated varieties‚ many progressive farmers and agriculture
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Insects are often seen merely as pests or uninvited guests to humanactivities. A large number of insects coexist with us humans and are either harmless or beneficial to our society and its endeavors. Often what is needed is a proper balance between our society and the societies that insect speciesrepresent. The emergence in the mid-20th century of integrated pest management is one aspect of our efforts to live together more successfully. The changes humans have brought upon their ecosystems by monocultures
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In biology species can become isolated from other species through a number of processes. These isolation processes keep the two species from interbreeding and producing hybrid offspring. There are five separate isolation processes that prevent two species capable of producing offspring from being able to do so. Ecological Isolation Ecological‚ or habitat‚ isolation is when two species that could interbreed do not because the species live in different areas. For example‚ in the wild of India both
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A Man Created a Homemade Beehive in Order to Save the Bees…His Invention Has Spread All Over the World Nowadays‚ bees are extremely popular in the media because their population is declining‚ as well as the number of the food that they produce. According to reports‚ the number of beehives is declining rapidly and the reasons for this are the climate changes and the use of mites and pesticides. As people are becoming more and more aware of the seriousness of this problem‚ they are trying as best
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Natural selection is the driving force in evolution because it is what trait offspring. There are many cases of evidence showing this such as the peppered moth population‚ the blue mussels‚ and the finches that we studied. The peppered is a very good example of natural selection because there is already black moths in the population‚ but the peppered survived better before the industrial revolution.Though when the industrial revolution comes in the lichens on the trees die and the peppered moth
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The remains of ancient plants can provide a wealth of archaeological information about a site‚ with many methods being available to the archaeologist engaged in extracting this data. Perhaps one of the most widely-known of these techniques‚ possibly because of its attractive nature‚ is pollen analysis - a technique developed in the early years of the twentieth century by‚ like so many archaeological techniques‚ a geologist -- the Norwegian Lennart van Post. To understand the technique and the uses
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Albert Einstein was believed to say‚ “If the bee disappears from the surface of the globe‚ man would have no more than four years to live.” Now that Colony Collapse Disorder is occurring‚ it is possible that bees will disappear. Colony Collapse Disorder (CCD) is when bees disappear from their hives or suddenly die. No one knows the cause of Colony Collapse Disorder. Some think it is caused by pesticides‚ but Bryan Walsh wrote that the cause is the Varroa mite. It could be that CCD is caused by a
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Honey Bees Are Now on the List Honey bees are now on the endangered species list‚ and it’s the fault of humans. If they become extinct in the near future‚ then the life that people know now‚ would become very different. People need to help save the honey bees‚ or else they could lose a lot of foods that they need to survive. One main reason that the honey bees are on the endangered species list‚ is simply‚ humans. The government and outside construction companies‚ send construction workers to
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Wildflower Dichotomous Key 1A. One Stem Go to 2 1B. Multiple Stems Go to 3 2A. Three Large Leaves below small flower Trillium 2B. Different appearance Go to 4 3A. Arrow-shaped leaves Arrowhead 3B. Five-petaled flower with 4 leaves Violet 4A. 2 large leaves at top May apple 4B. Different appearance Go to 5 5A. Bell-shaped flower Bellwort 5B. Almost Spherical flower Clover Pre-Lab 1. At each step‚ the dichotomous key provides 2 choices. 2.Some differences include lack of hind
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Most of us go the other way when we hear the buzz of a bee. But the buzzing is music to a beekeeper’s ears. As the name suggests‚ beekeepers keep bees. The main reason for keeping bees is to collect their honey. Honey is a mixture of plant nectar and fluid from the honeybees’ bodies. The bees put the honey in a cell in the honeycomb. Bees can live almost anywhere‚ but they will make more honey if there are flowers nearby. The bees need the flower from nectar to make honey. One of the most important
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