Five hundred million years ago‚ the invasion of land was under way. Why then? Astronomical numbers of photosynthetic cells had come and gone‚ and oxygen-producing types had changed the atmosphere. High above Earth‚ the sun’s energy had converted much of the oxygen into a dense ozone layer‚ a shield against lethal doses of ultraviolet radiation. Until then‚ life had not ventured above the surface of water and mud. Algae were evolving at the water’s edge‚ and one group – probably the charophytes
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important oilseed crop of the world. Groundnut seeds (kernels) contain 40-50% fat‚ 20-50 % protein and 10-20 % carbohydrate. Groundnut seeds are a nutritional source of vitamin E‚ niacin‚ falacin‚ calcium‚ phosphorus‚ magnesium‚ zinc‚ iron‚ riboflavin‚ thiamine and potassium. Groundnut kernels are consumed directly as raw‚ roasted or boiled kernels or oil extracted from the kernel is used as culinary oil). It is also used as animal feed (oil pressings‚ seeds‚ green material and straw) and industrial
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conditions and died. The methods of propagation were not known and most of the orchids which flowered under utmost care were found to be self sterile. Further‚ it was difficult to germinate the seeds‚ which lacks any functional endosperm. The seeds sown in the nursery beds required long period of germination and any disturbance to the soil or physical environment destroyed the whole population. Orchids from 9% of our flora and are the largest botanical family of higher plants in India
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of Easter Island. You make an interesting and valid point. Ignorance is what led the Easter Islanders to the demise of their region. Overuse of the natural habitat‚ coupled with the issues of attempting to plant seeds for the trees to grow‚ yet being attacked by rats before the germination process was detrimental. Part of me also thinks about the massive statues they made and the wasted resources it took to move them.
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hectare properties – hobby farms A small urban area formerly attached to the Army Officer Training Camp 3. Methods: Terrestrial is a term that refers to things related to the land or the earth such as: Soil temperature – infects the germination conditions for seeds Soil PH – to test if its in the variable range Soil texture – determined soil types Soil moisture – test if vegetation can grow Air moisture – variable change for life Aquatic environment is a term refers to the environment and water
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Guttiferae 6 Akarakara Pellitory root / Spanish Chamomile / Spanish pellitory Anacyclus pyrethrum Asteraceae / Compositae 7 Arolhi Troical almond / Nut gall Terminalia chebula Combretaceae 8 Asalhiyaa Cress / Garden cress Lepidium sativum Brassicaceae 9 Assaroon Asarum / European wild ginger Asarum europaeum Aristolochiaceae 10 Baiy goan’bili Sweet acacia / Cassie flower / Perfumed wattle Acacia farnesiana Fabaceae 11
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Paraphrase: Bacillus subtilis‚ known also as the hay bacillus or grass bacillus‚ engage for survival and competitive success in its natural habitats‚ B.subtilis shed light on the conduct of this organism throughout industrial fermentation. Certainly‚ the high adaptability of B.subtilis to environmental changes and insults stands at the basis of its success‚ not only in its character but also in marketable applications. Paraphrase: S.typhi might be younger than the split between the humans and the
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- diffusion (solid + liquid) Ch.4 - matter (solid‚liquid and gas - diagram) - elements‚ compounds and mixture (3 diff substances given) Ch.5 - the candle in gas jar (experiment) - the charcoal and kerosene burning experiment. - germinating seeds + cockroach (experiment of c.dioxide using hyd. carbonate indicator‚ Ch.6 - energy conversion (diagram - 3 objects : bicycle dynamo) - renewable + non renewable energy Ch.7 - the candle experiment (white + black flask) - sea and land breeze
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is a large family‚ which includes many economic species such as melon‚ watermelons‚ various gourds‚ and pumpkins that are of particular importance for the inhabitants of SSA. Many Cucurbitaceous species are eaten in several different forms‚ as seeds‚ leaves‚ fruits and sometimes flowers‚ by villagers throughout Africa. IPGRI‚ with national and international partners‚ has been leading the work on the collection‚ characterization and conservation‚ as well as on ethno botany‚ of Cucurbitaceae
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neighboring plants Today’s Lab: Allelopathy • Allelopathy: is a biological phenomenon by which an organism produces chemicals that influence the growth‚ survival‚ and reproduction of other organisms (i.e. some plants chemically inhibit the germination or growth of competitors) • The word comes from the Greek words allelon‚ meaning “of each other”‚ and pathos‚ meaning “to suffer”. • The chemicals may be released from plant tissues directly into the air (volatile chemicals)‚ or released
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