Persian windmill blades were vertical, like propellers, while European ones were horizontal, like egg-beaters.
<u>Explanation:
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A windmill is a functioning engine sort of thing. This transforms energy from the wind into rotational energy. For this reason this requires vanes called sails or blades. The very first windmills featured with long vertical shafts with blades designed like rectangles who lived in ninth-century Persia.
Six to twelve sails were produced of those windmills. The sails had been coated with matting reed or fabric. They differed greatly from the European editions. In 13th century China a similar nature of vertical shaft windmill with rectangular blades was found used for irrigation. Overall around 60 AD vertical axle windmills had been found in eastern Persia. In the 1180s northwestern Europe developed horizontal axle windmills. It is the form that is often employed today.
Answer:
25 and 21
Explanation:
if a homologous pair does not separate, then the homologous pair (when the spindle fibers are dragging it over to the other pole), then that chromosomes DNA will be the exact same as the paternal and maternals' DNA. During Meiosis I, there is the stage where the homologous pairs are lined up and pulled apart (where an exchange tends to happen), but if there pair doesn't mix, then the exact same DNA is duplicated, and thus, the same traits can be found in the daughter cell. If you are talking about an entire homologous pair being pulled over to one side of the nucleus, depriving the other side of a chromosomal pair, the daughter cells would then have 21 chromosomes, and the other one would have 25 chromosomes. The gametes, similarly, would have 21 chromosomes and 25 chromosomes.
Answer:
उनकी उच्च स्थिति और प्राकृतिक शिकारियों की सापेक्ष कमी के बावजूद, पांडा अभी भी जोखिम में हैं। मनुष्यों से गंभीर खतरे जंगली में सिर्फ 1,800 से अधिक पांडा छोड़ गए हैं पंडों मुख्य रूप से दक्षिण-पश्चिम चीन के पहाड़ों में समशीतोष्ण जंगलों में रहते हैं, जहां वे लगभग पूरी तरह से बांस पर रहते हैं। उन्हें हर दिन लगभग 26 से 84 पाउंड खाना चाहिए, यह इस बात पर निर्भर करता है कि वे बाँस के किस हिस्से को खा रहे हैं। वे अपनी बढ़े हुए कलाई की हड्डियों का उपयोग करते हैं जो विरोधी अंगूठे के रूप में कार्य करते हैं।
ummeed hai ki madad kee :)
Your answer should be "Appears brighter than any other star" because the sun is brighter than the next brightest star in the sky.
