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यदि उस डिम्ब का पुरूष के शुक्राणु से सम्मिलन न हो तो वह स्राव बन जाता है जो कि योनि से निष्कासित हो जाता है। इसी स्राव को मासिक धर्म, पीरियड्स या रजोधर्म या माहवारी कहते हैं। आमतौर पर मासिक धर्म का समय तीन से पांच दिन तक रहता है। लेकिन दो से सात दिन तक का समय सामान्य माहवारी समय माना जाता है।Hope it HELPS you....:-):-):-):-)PLEASE mark my answer as brainlist.......:-):-):-):-)Remember to THANKS and FOLLOW Radhika Hans....:-):-):-):-)◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉

tion:searchWhat would you like to ask?Experiments on Photosynthesis: CO2 is Necessary for Photosynthesis1226 ViewsShareStudy laterPDFEXPERIMENT TO PROVE THE NECESSITY OF CARBON DIOXIDE IN PHOTOSYNTHESIS - DEFINITIONTo prove the necessity of carbon dioxide in photosynthesis FOLLOWING steps need to doInsert a part of the leaf of a destarched PLANT into a conical flask containing POTASSIUM hydroxide.Potassium hydroxide solution absorbs the carbon dioxide gas from the air present in the glass bottle.Leave the plant sunlight.After few HOURS, perform a starch test to this and another leaf of the same plant.Observation-Leaf exposed to the atmosphere are bluish black.Leaf exposed to KOH does not change to blue-black colourResult- Starch is present in the green part of the leaf.Conclusion- Presence of starch proves that chlorophyll is necessary for photosynthesis as it traps sunlight.

tion:case 1: facebook firms in india are losing productivity because of facebook office staff are spending too lon the social networking site. according to the associated chambers of commerce and INDUST (assocham) employees use orkut facebook, myspace, and linkedin for romancing and purposes. on AVERAGE, employees spend an hour a day on SITES ke facebook. this reduce productivity by 125% nearly half of office employees accessed facebook during work time some 83% saw nothing wrong in surfing at work during office hours. in september 2009 portsmouth city council in england banned staff from accessing facebook on its computer it was discovered that they spent, on average, 400 hours on the site EVERY month questions: 1. what is meant by productivity? 2. analyse the impact on a full in productivity on costs using graphs to illustrate 3. analyse the possible CONSEQUENCES for businesses in india of banning access to fac and other social networking sites 4. do you think access should be denied?

any of the LIFE SCIENCES

Aids is a viral infection. it's other NAME is human IMMUNODEFICIENCY virus HIV

a) vasectomy --- vas deferensb) MENOPAUSE --- censation of menstrual cyclec) tubectomy --- FALLOPIAN tubed) PRODUCTION of ova --- oogenesise) AMOEBIASIS ---protozoans disease

You need to buy a 75 inches of fabric to be USED in MAKING a DRESS. if the fabric costs Php10.00 per CENTIMETER, how much will you need to buy it?

are really important for the planet and for all living things. PLANTS ABSORB carbon dioxide and release oxygen from their leaves, which humans and other ANIMALS need to breathe. Living things need plants to live - they EAT them and live in them. Plants help to clean WATER too.

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h's experiment was an experiment done in 1928 by Frederick Griffith. It was ONE of the first experiments SHOWING that bacteria can GET DNA through a process called transformation. ... In this experiment, bacteria from the III-S strain were killed by heat, and their REMAINS were ADDED to II-R strain bacteria.

was a CARRIER DISEASE EXPLANATION:OKKKK

s PICTURES......HOPE it will HELP you......

B- CYTOKINESIS EXPLANATION:HOPE it helps you Plz FOLLOW the

(iii). which carries bothreproductive and excretory fluidsSelect the CORRECT SEQUENCE of terms tocomplete the above PARAGRAPH.

Germinating SEEDS are used in the EXPERIMENT of the release of carbon dioxide during respiration because they respire a LOT more than a plant that has already GROWN. A new plant will require more energy and oxygen to GET started.

is 2.54 cmcost per centimeter = rs.15length of fabric = 100 inchesto convert the length of fabric from inches to centimeter, we NEED to multiply 100 by 2.54100 X 2.54 = 254So now we have 254cm of fabricHence, the COST will be,254 x 15 = Rs. 3810Therefore the total cost of fabric will be rupees 3810........Hope this answer might help you.......

tion:During glycolysis, ONE glucose MOLECULE is split into two pyruvate molecules, using 2 ATP while PRODUCING 4 ATP and 2 NADH molecules.

zoological taxonomy was developed by CARL Linnaeus during the 1730s to 1750s. He named the HUMAN species as Homo SAPIENS in 1758, as the only MEMBER species of the genus Homo, divided into several subspecies corresponding to the great RACES. The Latin noun homō (genitive hominis) means "human being".________________________________

tion:A microsporangium is CIRCULAR in OUTLINE in transverse section and is USUALLY surrounded by four wall layers. The OUTERMOST is the single layer of the epidermis. The second layer is endothecium, where CELLS develop thickenings. ... The innermost layer is tapetum, which provides nutrition to the developing pollen cells.

PhylumExplanation:Notochords are only FOUND in the PHYLUM CHORDATA, a GROUP of animals that INCLUDES humans.

In 1881, Charles Darwin and Francis Darwin performed experiments on coleoptiles of canary grass and observed that they bend TOWARDS the light when exposed to light from a unidirectional SOURCE. They concluded that the tip of the coleoptile was responsible for sensing light, and proposed that a messenger is transmitted in a downward direction from the tip of the coleoptile, causing it to bend.In 1913, Peter Boysen-Jensen concluded that the substance secreted at the tip is soluble in WATER (gelatin).In 1926, F.W. Went published a report describing how he isolated a plant growth substance by placing agar blocks under coleoptile tips for a PERIOD of time then removing them and placing them on decapitated Avena stems. After placement of the agar, the stems resumed growth. In 1928, Went developed a method of quantifying this plant growth substance. His experiment showed that a chemical messenger diffuses from coleoptile tips and CAUSES it to grow towards the light. He later proposed that the messenger substance is a growth-promoting hormone, which he named auxin. The Avena Coleoptile test is the most widely accepted bioassay for quantitative estimation of auxin concentration.✌✌THANK YOU✌✌PLEASE MARK AS BRAINLIEST

The human CIRCULATORY system is a double circulatory system. It has two separate CIRCUITS and blood PASSES through the heart twice: the pulmonary CIRCUIT is between the heart and lungs. the systemic circuit is between the heart and the other organs. ››

♡Active TRANSPORT requires CHEMICAL energy because it is the MOVEMENT of BIOCHEMICALS from areas of lower concentration to areas of higher concentration♡ ♡Passive transport moves biochemicals from areas of high concentration to areas of low concentration; so it does not require energy♡ ♡HOPE IT HELPS U♡

Microbes, or microscopic organisms, are widely USED in large-scale industrial processes. They are crucial for the PRODUCTION of a variety of metabolites, such as ethanol, BUTANOL, lactic ACID and riboflavin, as well as the transformation of chemicals that help to reduce ENVIRONMENTAL pollution.

plz follow me ❤️❤️❤️ Closed and open CIRCULATORY systems: (a) In closed circulatory systems, the heart PUMPS blood through vessels that are separate from the interstitial fluid of the body. ... In an open circulatory SYSTEM, the blood is not enclosed in the blood vessels, but is PUMPED into a cavity called a hemocoel.

On the basis of PRESENCE of pigments, the PLASTIDS are of two types: (i) the chromoplasts (CHROMATOPHORES) having pigment, and (II) the leucoplasts which are colourless plastids. 1. Chloroplasts: ... It is the most common plastid (Gr.

Biodegradable MATERIAL contains food waste like VEGETABLE and fruit peels, dead plants and animals, egg shells, CHICKEN, garden waste paper materials, etc. Non-biodegradable things include of plastics, polystyrene, PLASTIC, metals, and aluminum cans, TOXIC chemicals, paints, tyres, etc.

Animals carry the infecting agents from sick person to ANOTHER healthy personExplanation:VECTORS or intermediaries are animals insects that carry the infecting agents from a sick person to another healthy person. Mosquitoes (for malaria, filariasis, yellow fever and dengue), flies (typhoid, kala-azar, sleeping sickness), louse (typhus) and RAT (for PLAGUE).

A full 40 percent of the drugs behind the pharmacist's counter in the Western worldare derived from plants that PEOPLE haveused for CENTURIES, including the top 20 best selling PRESCRIPTION drugs in the United STATES today.

ɢʀᴇᴇ Bᴜᴅᴅɪɴɢ ɪs ᴀ ᴘʀᴏᴄᴇss sᴇᴇɴ ɪɴ "sɪɴɢʟᴇ ᴄᴇʟʟᴇᴅ ᴇᴜᴋᴀʀʏᴏᴛᴇs"Iɴ ᴛʜɪs ᴘʀᴏᴄᴇss ᴏɴʟʏ ᴏɴᴇ ᴘᴀʀᴇɴᴛ Is ɪɴᴠᴏʟᴠᴇᴅ ᴡʜɪᴄʜ ᴘʀᴏᴅᴜᴄᴇs ᴏғғsᴘʀɪɴɢ. Iɴ ʙᴜᴅᴅɪɴɢ ɴᴇᴡ ɪɴᴅɪᴠɪᴅᴜᴀʟs ᴀʀɪsᴇ ғʀᴏᴍ ᴛʜᴇ ʙᴜᴅ ᴏʀ ᴀɴ ᴏᴜᴛɢʀᴏᴡᴛʜ ᴅᴜᴇ ᴛᴏ ᴄᴇʟʟ ᴅɪᴠɪsɪᴏɴ ᴀᴛ ᴛʜᴀᴛ ᴘᴏɪɴᴛ. Exᴀᴍᴘʟᴇ : ʏᴇᴀsᴛ (ᴜɴɪᴄᴇʟʟᴜʟᴀʀ ᴏʀɢᴀɴɪsᴍ) ʜʏᴅʀᴀ (ᴍᴜʟᴛɪ ᴄᴇʟʟᴜʟᴀʀ ᴏʀɢᴀɴɪsᴍ) Hᴏᴘᴇ ᴛʜɪs ʜᴇʟᴘs ᴜ Tʜᴀɴᴋ ᴜ :-)

tion:Blood is the UNIQUE fluid connective tissue present in our BODY and it PLAYS a significant role in transporting a wide variety of substances to different parts of the body. The main components of blood include Red blood cells, White blood cells, blood platelets and plasma. Blood is the main component of the human circulatory system, Lymph is a clear to white fluid tissue which is composed of lymphocytes and white blood cells. Lymph is the part of the lymphatic system and is generally found in the lymphatic vessels and in the various cavities of the body. It plays a vital role by transporting the white blood cells within the lymph nodes and bones, in the removal of interstitial fluid from tissues and ALSO fights against the disease-causing and INFECTIOUS bacteria invading the blood cells. Hope it helps you ❣️❣️❣️❣️❣️❣️

no EXPLANATION:because copper t is just for PREVENTING implantation of zygote in the UTERINE WALLS.

Grana, the plural of granum, are stacks of structures called THYLAKOIDS which are LITTLE discs of MEMBRANE on which the light-dependent reactions of PHOTOSYNTHESIS take PLACE. Stacked into grana, the shape of the thylakoids allow for optimum surface area, maximizing the amount of photosynthesis that can happen.Explanation:hope it helps you..