𝐒𝐂𝐈𝐄𝐍𝐂𝐄 𝐒𝐏𝐄𝐂𝐓𝐑𝐔𝐌

_አነቃቂ_ሀሳቦች 1."የራስህን የህይወት ዕቅድ ካልቀረፅክ፣ ዕጣ ፈንታህ የሚሆነው በሌሎች እቅድ ውስጥ መኖር ይሆናል።" #ጂም_ሮን 2. "ህይወት በራሷ ፣ ምንም ያልተሳለባት ባዶ የሰዕል ሸራ ነች። ስንፈልግ መከራን፣ ስንፈልግ ሐሴትን የምንስልባት ባዶ ሸራ።" #ኦሾ 3.“ለመጀመር ትልቅ መሆን አይጠበቅብህም ነገር ግን ትልቅ ለመሆን መጀመር አለብህ፡፡" #ዚግ_ዚግላር 4.“እያንዳንዱ ችግር፣ እያንዳንዱ ውድቀት፣ እያንዳንዱ የልብ ስብራት የእኩል ወይም የላቀ የጥቅም ዘርን በውስጡ ተሸክሟል።” #ናፖሊዮን_ሂል 5."በህይወት ያለህን ነገር ከተመለከትክ ሁልጊዜ ብዙ ነገር ይኖርሃል፤ በህይወት የሌለህን ነገር ብትመለከት መቼም አይበቃህም"  #ኦፕራ_ዊንፍሬይ 6."በሚታይና በሚነካ ነገር ማመን በፍፁም እምነት አይደለም። ባልታየው ማመን ግን  አሸናፊነትና መታደል ነው።"  #አብርሀም_ሊንከን 7."እስከ ነጋ፣ እስከ መሸ፣ እስከ ተነፈስን እዚህ ህይወት ውስጥ እስካለን ድረስ ዘገዬ የሚባል ነገር የለም!" #ዳግማዊት_ክፍለ 8."በህይወት ውስጥ ትልቁ ክብር ያለመውደቅ ሳይሆን በወደቅን ቁጥር መነሳት ላይ ነው። #ኔልሰን_ማንደላ 9.“ደስተኛ የሆነ ሕይወት ለመኖር ከፈለግክ ከሁኔታና ከሰዎች ጋር ሳይሆን ከአላማና እቅድህ ጋር ተጣበቅ።” #አልበርት_አንስታይን 10.“ለመማር ፈቃደኛ ካልሆንክ ማንም ሊረዳህ አትችልም፣ ለመማር ፈቃደኛ ከሆንክ ማንም ሊያስቆምህ አይችልም” #ዚግ_ዚግለር መልካም ቀን🙏🙏🙏🙏 የትኛውን ነው የወደዳችሁት በኮመንት (በቁጥር)✍️✍️ 👇👇 ምንጭ 👉👉ሶሻል ሚዲያ 👇 Join us for more 👇 ╔═══════════╗   @omo_academy ╚═══════════╝ 𝐎𝐌𝐎 𝐀𝐂𝐀𝐃𝐄𝐌𝐘             𝒀𝒐𝒖𝒓 𝒑𝒂𝒕𝒉 𝒘𝒂𝒚 𝒕𝒐 𝒔𝒖𝒄𝒄𝒆𝒔𝒔 !

Grade 10 extreme series are coming soon ! 🗨️Comment ➣Forward 👇 Join us for more 👇 ╔═══════════╗   @omo_academy ╚═══════════╝ 𝐎𝐌𝐎 𝐀𝐂𝐀𝐃𝐄𝐌𝐘             𝒀𝒐𝒖𝒓 𝒑𝒂𝒕𝒉 𝒘𝒂𝒚 𝒕𝒐 𝒔𝒖𝒄𝒄𝒆𝒔𝒔 !

#Entrance የ2017 12ኛ ክፍል ፈተና የሚሰጥበት ቀን 🎯ከ ሰኔ 18 -28  መጀመሪያ ለማህበራዊ ሳይንስ በመቀጠል ደግሞ ለተፈጥሮ ሳይንስ ተፈታኞች በበይነ መረብ (Online) እና በዩኒቨርሲቲ ውስጥ በወረቀት ይሰጣል። በዘንድሮው አመት ከተፈታኞች ውስጥ ግማሽ የሚሆኑትን በኦላይን ለመስጠት አቅም አለን ሲሉ የትምህርት ሚኒስትር ብርሀኑ ነጋ መናገራቸው ይታወሳል ።  🎯ስለሆነም ተፈታኞች እና የሚመለከታቸው ሁሉ ተገቢውን ዝግጅት እንዲያደርጉ እናሳስባለን። ➦Share   🗨️ Comment       ➣Forward 👇 Join us for more 👇 ╔═══════════╗   @omo_academy ╚═══════════╝ 𝐎𝐌𝐎 𝐀𝐂𝐀𝐃𝐄𝐌𝐘             𝒀𝒐𝒖𝒓 𝒑𝒂𝒕𝒉 𝒘𝒂𝒚 𝒕𝒐 𝒔𝒖𝒄𝒄𝒆𝒔𝒔 !

Baga ayyaana dhaloota Kiristoosiin nagaan isin gahe!! Ayyaanni kan nagaafi gammachuu isiniif haa ta'u! Hashshu Goda yeletas saro gakkideta ! እንኳን ለብርሃነ ልደቱ በሰላም አደረሳችሁ!! በዓሉ የሰላም የጤናና የደስታ ይሁንላችሁ! OMO Academy wishes a Merry Christmas to all those celebrating today! May your day be filled with joy, peace, and love! 👇 Join us for more 👇 ╔═══════════╗   @omo_academy ╚═══════════╝ 𝐎𝐌𝐎 𝐀𝐂𝐀𝐃𝐄𝐌𝐘             𝒀𝒐𝒖𝒓 𝒑𝒂𝒕𝒉 𝒘𝒂𝒚 𝒕𝒐 𝒔𝒖𝒄𝒄𝒆𝒔𝒔 !        

100 questions gathered from Chem  Grade 11 unit 1 with grade 9 unit 1 and Unit 2    UEE 2000-2016 Source: Z Secret 👇 Join us for more 👇 ╔═══════════╗   @omo_academy ╚═══════════╝ 𝐎𝐌𝐎 𝐀𝐂𝐀𝐃𝐄𝐌𝐘             𝒀𝒐𝒖𝒓 𝒑𝒂𝒕𝒉 𝒘𝒂𝒚 𝒕𝒐 𝒔𝒖𝒄𝒄𝒆𝒔𝒔 !        

🩺🌿 Excretory System 🌿🚽 1⃣ Kidneys 🫘:    ➤ Structure: The kidneys are a pair of bean-shaped organs located on either side of the spine, just below the rib cage. 🫘 Each kidney contains around a million nephrons, which are the functional units responsible for filtering blood.🩸    ➤ Function: The primary role of the kidneys is to filter waste products 🗑🥠and excess substances from the blood to form urine. They also regulate blood pressure, electrolyte balance, and red blood cell production through the release of hormones like erythropoietin. 💧🩸  ➤ Nephron: The nephron consists of several parts:      ➱ Glomerulus: A network of capillaries where blood filtration  begins.      ➱ Bowman’s Capsule: Surrounds the glomerulus and collects the filtrate.      ➱ Proximal Convoluted Tubule (PCT): Reabsorbs water, ions, and nutrients back into the blood.🩸      ➱ Loop of Henle: Concentrates the filtrate by reabsorbing water💧 and salts.      ➱ Distal Convoluted Tubule (DCT): Further adjusts the composition of the filtrate.      ➱ Collecting Duct: Collects urine from multiple nephrons and channels it towards the renal pelvis. 2⃣ Ureters 🌊:    ➤ Structure and Function: The ureters are muscular tubes💪 that transport urine from the kidneys to the bladder.🫘 Peristaltic movements (wave-like contractions) help propel the urine downwards. 🌿🚰 3⃣ Urinary Bladder 🧪:    ➤ Structure and Function: The bladder is a hollow, muscular organ💪 that stores urine until it is ready to be excreted. It can expand and contract to hold varying amounts of urine, and it is lined with a special type of epithelium called transitional epithelium. 🩸 4⃣ Urethra 🚽:    ➤ Structure and Function: The urethra is a tube that carries urine from the bladder 👝to the outside of the body. In males, it also transports semen. The urethra is shorter in females, which makes them more susceptible to urinary tract infections (UTIs). 🌸 Filtration Process 🩺: 👉 Glomerular Filtration: Blood 🩸enters the glomerulus under high pressure, causing water💦, ions, glucose, 🧁and waste products💩 to be filtered into the Bowman’s capsule, while larger molecules and blood cells remain in the bloodstream. 👉 Tubular Reabsorption: The filtrate passes through the PCT, Loop of Henle, and DCT, where essential substances like glucose🍦, amino acids, and water are reabsorbed back into the bloodstream. 👉 Tubular Secretion: Additional waste products 🟤 and excess ions are secreted into the tubular fluid from the blood🩸, refining the composition of the final urine. Regulation of Blood Composition 🌊: 👉 Water Balance:💦 The kidneys regulate the body's water balance by adjusting the concentration of urine. When the body is dehydrated, more water💧 is reabsorbed, and urine becomes concentrated. 👉 Electrolyte Balance: The kidneys maintain electrolyte ⚡️balance by reabsorbing necessary ions and excreting excess ones. 👉 Acid-Base Balance: By selectively reabsorbing bicarbonate and secreting hydrogen ions, the kidneys🫘 help maintain the pH of the blood within a narrow range. Hormonal Control 🧬: ➤ Antidiuretic Hormone (ADH): Increases water 💧 reabsorption in the kidneys, reducing urine volume and conserving water. ➤ Aldosterone: Promotes the reabsorption of sodium and the excretion of potassium, influencing blood pressure and blood volume. ➤ Erythropoietin: Stimulates the production of red blood cells🩸 in response to low oxygen levels.😮‍💨 👇 Join us for more 👇 ╔═══════════╗   @omo_academy ╚═══════════╝ 𝐎𝐌𝐎 𝐀𝐂𝐀𝐃𝐄𝐌𝐘             𝒀𝒐𝒖𝒓 𝒑𝒂𝒕𝒉 𝒘𝒂𝒚 𝒕𝒐 𝒔𝒖𝒄𝒄𝒆𝒔𝒔 !        

⛑The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion. Analyzing the reactants and products of a given reaction will allow you to place it into one of these categories. Some reactions will fit into more than one category.ከመፅሀፋችሁ ላይ በአራት ይከፍለዋል ።  combustion ንን በ combination ስር ስለሚያጠቃልለው ነው ። 📌Combination Reactions A combination reaction, also known as a synthesis reaction, is a reaction in which two or more substances combine to form a single new substance . Combination reactions can also be called synthesis reactions . reactant በቀጥታ ሲጣመሩ product የሚያስገኙበት ሂደት ነው ። The general form of a combination reaction is: A+B→AB One combination reaction is two elements combining to form a compound. ምሳሌ 2Na(s)+Cl2(g)→2NaCl(s) 2Mg(s)+O2(g)→2MgO(s) 📌Decomposition Reactions A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances. ይሄ ደግሞ መበታተን ወይም መፈረካከስ ነው ።  The general form of a decomposition reaction is: AB→A+B Most decomposition reactions require an input of energy in the form of heat, light, or electricity. ነገር ግን በዚህ ጊዜ energy ያስፈልገናል ።በሙቀት መልክ ወይም በብርሀን መልክ ። ምሳሌ CaCO3(s)→CaO(s)+CO2(g) 📌Single-Replacement Reactions A single-replacement reaction is a reaction in which one element replaces a similar element in a compound. The general form of a single-replacement (also called single-displacement) reaction is:A+BC→AC+B አቅም ያለው አቅም የሌለውን የሚያስወግድበት አይነት reaction ነው ። 👿More active metal 🤜 less active metal. 👿more active non metal 🤜 less active non metal. ምሳሌ Mg(s)+Cu(NO3)2(aq)→Mg(NO3)2(aq)+Cu(s) Magnesium 🤜 copper Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) Zinc 🤜 hydrogen 📌Double-Replacement Reactions A double-replacement reaction is a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds. The general form of a double-replacement (also called double-displacement) reaction is: AB+CD→AD+CB ምሳሌ 2KI(aq)+Pb(NO3)2(aq)→2KNO3(aq)+PbI2(s)        👇 Join us for more 👇 ╔═══════════╗   @omo_academy ╚═══════════╝ 𝐎𝐌𝐎 𝐀𝐂𝐀𝐃𝐄𝐌𝐘             𝒀𝒐𝒖𝒓 𝒑𝒂𝒕𝒉 𝒘𝒂𝒚 𝒕𝒐 𝒔𝒖𝒄𝒄𝒆𝒔𝒔 !

⛑The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion. Analyzing the reactants and products of a given reaction will allow you to place it into one of these categories. Some reactions will fit into more than one category.ከመፅሀፋችሁ ላይ በአራት ይከፍለዋል ።  combustion ንን በ combination ስር ስለሚያጠቃልለው ነው ። 📌Combination Reactions A combination reaction, also known as a synthesis reaction, is a reaction in which two or more substances combine to form a single new substance . Combination reactions can also be called synthesis reactions . reactant በቀጥታ ሲጣመሩ product የሚያስገኙበት ሂደት ነው ። The general form of a combination reaction is: A+B→AB One combination reaction is two elements combining to form a compound. ምሳሌ 2Na(s)+Cl2(g)→2NaCl(s) 2Mg(s)+O2(g)→2MgO(s) 📌Decomposition Reactions A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances. ይሄ ደግሞ መበታተን ወይም መፈረካከስ ነው ።  The general form of a decomposition reaction is: AB→A+B Most decomposition reactions require an input of energy in the form of heat, light, or electricity. ነገር ግን በዚህ ጊዜ energy ያስፈልገናል ።በሙቀት መልክ ወይም በብርሀን መልክ ። ምሳሌ CaCO3(s)→CaO(s)+CO2(g) 📌Single-Replacement Reactions A single-replacement reaction is a reaction in which one element replaces a similar element in a compound. The general form of a single-replacement (also called single-displacement) reaction is:A+BC→AC+B አቅም ያለው አቅም የሌለውን የሚያስወግድበት አይነት reaction ነው ። 👿More active metal 🤜 less active metal. 👿more active non metal 🤜 less active non metal. ምሳሌ Mg(s)+Cu(NO3)2(aq)→Mg(NO3)2(aq)+Cu(s) Magnesium 🤜 copper Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) Zinc 🤜 hydrogen 📌Double-Replacement Reactions A double-replacement reaction is a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds. The general form of a double-replacement (also called double-displacement) reaction is: AB+CD→AD+CB ምሳሌ 2KI(aq)+Pb(NO3)2(aq)→2KNO3(aq)+PbI2(s)        👇 Join us for more 👇 ╔═══════════╗   @omo_academy ╚═══════════╝ 𝐎𝐌𝐎 𝐀𝐂𝐀𝐃𝐄𝐌𝐘             𝒀𝒐𝒖𝒓 𝒑𝒂𝒕𝒉 𝒘𝒂𝒚 𝒕𝒐 𝒔𝒖𝒄𝒄𝒆𝒔𝒔 !

🧠🌟 The Nervous System 🌟🧠 1⃣ Central Nervous System (CNS): serves as the main control center for the body. It consists of the brain🧠and spinal cord.    ➤ Brain: The control center of the body, the brain processes sensory information, regulates bodily functions, and is the seat of consciousness, thoughts, and emotions. 🧠 It consists of several parts, each with specific functions:      👉 Cerebrum: The largest part, responsible for voluntary activities, intelligence, memory🤔, and sensory processing.      👉 Cerebellum: Controls balance⚖, coordination, and fine motor skills.      👉 Brainstem: Regulates vital functions such as heart rate, breathing😮‍💨🌬, and sleep cycles.😴    ➤ Spinal Cord: A long, thin bundle of nerve fibers that extends from the brainstem down the back. It transmits neural signals between the brain🧠and the rest of the body🧍‍♀and coordinates reflexes. 🦴 2⃣ Peripheral Nervous System (PNS): is made up of all the nerves outside of the brain and spinal cord. ▻It connects the CNS to the rest of the body and carries sensory information from the body to the CNS and motor commands from the CNS to the muscles💪 and glands    ➤ Somatic Nervous System: Controls voluntary movements🏃‍♂️by transmitting signals from the CNS to skeletal muscles. It also relays sensory information from the body to the CNS.    ➤ Autonomic Nervous System: Regulates involuntary functions such as heart rate❤️🏃, digestion 🍽, and respiratory rate. It has two main divisions:      ➤ Sympathetic Nervous System: Prepares the body for ‘fight or flight’🏃 responses during stressful situations by increasing heart rate, dilating pupils, and redirecting🩸 blood flow to muscles. 🏃‍♀️      ➤ Parasympathetic Nervous System: Promotes ‘rest and digest’ 🍽🧘‍♂️ activities, conserving energy by slowing the heart rate and increasing digestive activities. 🍽🧘‍♂️ 3⃣ Neurons and Nerve Impulses ⚡️:    ➤ Nerve impulse is an electrical signal ⚡️that travels along a nerve fiber. It is created by a change in the electrical charge across the cell membrane of a neuron.🍥    ➤ Neurons: The basic building blocks of the nervous system, neurons are specialized cells that transmit nerve impulses. They consist of:    ➤ Dendrites: Branch-like structures that receive signals from other neurons and convey them to the cell body.    ➤ Cell Body (Soma): Contains the nucleus and other organelles, processing incoming signals.🍥    ➤ Axon: A long, thin fiber that transmits signals away from the cell body to other neurons or muscles.💪 It may be covered with a myelin sheath, which increases the speed of signal transmission.🍥    ➤ Synapses: Junctions between neurons where the transmission of nerve impulses occurs through the release of neurotransmitters. These chemical messengers🧪cross the synaptic gap and bind to receptors on the next neuron, continuing the signal transmission.🧪        👇 Join us for more 👇 ╔═══════════╗   @omo_academy ╚═══════════╝ 𝐎𝐌𝐎 𝐀𝐂𝐀𝐃𝐄𝐌𝐘             𝒀𝒐𝒖𝒓 𝒑𝒂𝒕𝒉 𝒘𝒂𝒚 𝒕𝒐 𝒔𝒖𝒄𝒄𝒆𝒔𝒔 !

🆕እንግሊዝኛ ቋንቋ ማሳደጊያ ፖርታል ጥቆማ 👉🏼የኢፌዴሪ ትምህርት ሚኒስቴር የመምህራንና ተማሪዎችን እንግሊዘኛ ቋንቋን ለማሻሻል የሚያግዝ ፖርታል አዘጋጅቷል፡፡  🤏🏼ፖርታሉ ከቅድመ አንደኛ ጀምሮ በሁሉም የክፍል ደረጃዎች የተዘጋጁ ሁኔታና አውድን ያገነዘቡ እያዝናኑ የሚያስተሩ ግልጽና በቀላሉ ለመረዳት የሚያስችሉ  በድምጽ በጽሁፍና በምስል የተቀናበሩና የእንግሊዝኛ ቋንቋን የሚያሻሽሉ መረጃዎች ለማግኘት ያስችላል። 🫴🏼ፖርታሉን ለመጠቀም ኢንተርኔት ማብራት የሚያስፈልግ ቢሆንም  ኢንተርኔቱ ገንዘብ የማይቆርጥ ሲሆን  በስማርት ስልክ፣ ስማርት ቴሌቪዥን፣ በታብሌትና በኮምፒውተር በማንኛውም ብሮዘር መጠቀም ይቻላል፡፡ 🫳🏼ፖርታሉን https://elearn-english.moe.gov.et በመንካት መክፈትና መጠቀም ይችላል፡፡ 👇 Join us for more 👇 ╔═══════════╗   @omo_academy ╚═══════════╝ 𝐎𝐌𝐎 𝐀𝐂𝐀𝐃𝐄𝐌𝐘             𝒀𝒐𝒖𝒓 𝒑𝒂𝒕𝒉 𝒘𝒂𝒚 𝒕𝒐 𝒔𝒖𝒄𝒄𝒆𝒔𝒔 !