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he was the PRESIDENT of USA.

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Answer:

2)

Explanation:

In BT cotton cry gen in insert for INCREASE immunity of PLANT

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sexual mode of reproduction is better as each individual is different in CHARACTERS and traits..If HUMANS had asexual mode of reproduction then each and EVERY HUMAN being would have looked same.. therfore sexual mode of reproduction gives identity to an individual..

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ANSWER:

GLUCOSE is the SIMPLEST CARBOHYDRATE

YES ✅ , in ASEXUAL reproduction the offspring is genetically identical to the PARENT CELL because in asexual reproduction the offspring is PRODUCED by the single parent .

➡In asexual reproduction the off spring is clone to the parent cell.

➡ Example: Amoeba.

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Answer:

mucosa..

Parietal cells in the mucosa are found in the inner lining of the stomach which secrete hydrochloric acid (HCl) into the stomach lumen, or cavity. It decreases the PH of the stomach and has corrosive nature hence can harm the stomach wall. The gastric JUICE CONSISTS mucous also. It gets deposits on the inner wall of the stomach to protect it from the corrosiveness of HCl.

I THINK (a) ribosomes

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EXPLANATION:

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The 'temperature of a substance' remains constant during its melting and boiling point because the change in any state of matter as n solid to LIQUID or the liquid to a GAS involves crossing the 'latent heat of FUSION' which causes a change in the intermolecular spacing of the molecules in the substance.

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Answer:

26 BONES MATE .

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Answer:

12 PAIRS

Explanation:

12 on the EITHER SIDE of the RIBS

Explanation:

because it deals with biological RESOURCES LIKE organisms and NATURE

Answer:

Mixed cropping have many advantages which include:

1- crops maintain PRODUCTIVITY with lesser input

2-there are more land to be farmed with same AMOUNT of labor and machinery

3-according to some scientific basis there is almost 25% increase in yield RELATIVE to monocropping

4-there is reduction in NEED of ARTIFICIAL fertilizers, which can otherwise be expensive

5-reduce infection of pest and disease as most crop tend to be attacked by different pest/disease

6- there is high yield and high productivity if managed well

7-intensive culitvation is possible

8-it lessens likelihood of total crop failure, as you can be able to result to other mixed crop

Explanation:

Answer:

five ADVANTAGES of mixed ccropping

It HELPS in maintaining a balance of soil nutrients.

It REDUCES insect pest, weed, and crop diseases.

There will be more land to be farmed with same AMOUNT of expense related to labor and machinery.

It reduces requirement of artificial fertilizers which are very expensive.

The crops become resistant to climate extremes such as hot, wet, dry, and cold, hence improve the PRODUCTIVITY.

Answer:

PHLOEM TISSUE

Explanation:

The xylem tissue TRANSPORTS water and minerals from the roots to the leaves whereas the phloem tissue transports food from the leaves to the other parts of the plant. Xylem tissue has tracheids and vessel elements. Phloem tissue has companion CELLS and sieve tubes.

Expose the apparatus to the sunlight. After few hours, gas BUBBLES will form and collect in the test tube. Test the gas INTHE test tube. A GLOWING SPLINTER bursts into the flame SHOWS the presence of oxygen.

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The CORRECT ANSWER is METALS

Answer:

Mixed cropping:- in this TYPE of cropping the plants of different kinds are GROWN on a same piece of land and on same time.

Advantages of mixed cropping :-

1. we can GET different crops in same time.
2. It saves time and labour.
3. It avoids the depletion of a particular nutrient.
4. It maintains the soil fertility.
5. They need less fertiliser for growth

THROUGH CONTAMINATED WATER MAY BE. BECAUSE THE FRENCH DOCTOR SAID THAT THE CORONA SPREADING THROUGH CONTAMINATED WATER AND U ALSO KNOW THAT IN INDIA MANY RIVERS ARE POLLUTED AND CONTAMIMATED .THAT'S WHY CORONA SPREDING IN INDIA....

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Answer:

Explanation:

FIRST liver

SECOND pancrease

however in some REPORTS they MENTIONED skin is the LARGEST gland

Answer:

HEY dude.

..BENEFIT 1

easier crop PRODUCTION....

benifit 2

less time CONSUMING and more productive

benifit 3

have a greater efficiency in nitrogen fixation.....

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ANSWER:

The circulatory SYSTEM of annelids is closed. || Arthropods have an OPEN circulatory system. ... APPENDAGES are absent in Annelids. || Arthropods have joined appendages.

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Advantages of Four Chambered heart:

It allows us to send our dirty BLOOD to the cleaners-the-lungs and our CLEAN blood to the rest of the body without having to mix the two.

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ANSWER:

Justice is the insurance we have on our lives, and OBEDIENCE is the premium we PAY for it. In the same degree that we overrate ourselves, we shall underrate others; for injustice ALLOWED at home is not likely to be correct abroad.

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EXPLANATION:

Protein FUNCTION. We have seen that each type of protein consists of a precise sequence of amino acids that allows it to fold up into a PARTICULAR three-dimensional shape, or conformation. ... In this section, we explain how proteins BIND to other selected MOLECULES and how their activity depends on such binding.

Explanation:

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ANSWER:

hydrostatic skeleton

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Answer:

hey!

first of all their is no so called impure blood .. there are just some IMPURITIES that makes it HOSTILE to circulate throughout the BODY..

these impurities are removed from our body by the help of purification through kidney..

these impurities are excreted out in form of URINE ..

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PLASTIDS refer to the double membrane bound organelles found in PLANT cells. They are found in the cytoplasm. Plants make and STORE food in plastids. They have their own DNA and Ribosomes.

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Answer:

Hypoglycaemia -

Excess insulin in the body allows rapid uptake of glucose by the body cells, thus RESULTING in a sharp DECREASE in blood-sugar levels. Such condition is called hypoglycemia.

Diabetes MELLITUS -

It is a disorder in which blood sugar (glucose) levels are abnormally high because the body does not produce ENOUGH insulin to meet its needs. URINATION and thirst increases and people may lose weight even if they are not trying to.

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ANSWER:

answer is DECOMPOSER.......

ANSWER:

FUNCTIONS of what MATE

Answer

• A■ A multicellular, FILAMENTOUS ALGA that exhibits a type of SEXUAL life cycle in which the meiotic division occurs after the formation of zygote. The adult filament of this alga has haploid VEGETATIVE cells and haploid gametangia. ... So, the CORRECT answer is 'Haploid vegetative cells andhaploid gametangia'.

B■

• A multicellular, filamentous alga that exhibits a type of sexual life cycle in which the meiotic division occurs after the formation of zygote. The adult filament of this alga has haploid vegetative cells and haploid gametangia. ... So, the correct answer is 'Haploid vegetative cells andhaploid gametangia'.

Answer:

A.

Pantala flavescens, because these organisms would have a HIGH level of GENETIC VARIATION due to sexual reproduction

B.

Hydra oligactis, because these organisms would have a low level of genetic variation due to sexual reproduction

C.

Spirodela polyrhiza, because these organisms would have a low level of genetic variation due to asexual reproduction

D.

Naegleria fowleri, because these organisms would have a high level of genetic variation due to asexual reproduction

1. They R used as a vaccine for VIRAL infections
2. They HELP to generate memory cells against VIRUS infections
3. Eg:- tetanus vaccine, RABIES vaccine.

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Answer:

What are viruses?

Viruses are very small particles that can infect animals and plants and make them sick. Viruses are made up of genetic materials like DNA and are protected by a coating of protein.

Viruses hijack the cells of living organisms. They inject their genetic material right into the cell and take over. They then use the cell to make more viruses and take over more cells.

Are viruses alive?

Scientists differ on WHETHER viruses are actually alive or not. Many people SAY they are non-living because they cannot reproduce without the aid of a host. Viruses also do not metabolize food into energy or have organized cells, which are usually characteristics of living things.

Characteristics of Viruses

They do not have an organized cell structure.

They have no cell nucleus.

They typically have one or two strands of DNA or RNA.

They are covered with a protective coat of protein called the CAPSID.

They are inactive when not inside a living cell, but are active when inside another living cell.

Why are viruses bad?

When viruses invade a body's cells and begin to multiply, they make the host sick. Viruses can cause all sorts of diseases.

How do viruses spread?

Viruses are very small and lightweight. They can float through the air, survive in water, or EVEN on the surface of your skin. Viruses can be passed from one person to another by shaking hands, touching food, through water, or through the air when a person coughs or sneezes.

Viruses can also be passed on by insect bites, animals, or through bad food.

Examples of Viruses

There are many viruses that can infect people and make them sick. One of the most common is INFLUENZA which causes people to get the flu. Other diseases caused by viruses include the common cold, measles, mumps, yellow fever, and hepatitis.

How to Avoid Getting Infected

There are things you can do to help reduce your chance of getting infected by a virus. Here are a few examples:

Wash your hands (probably one of the most important ones).

Don't put your hands or fingers in your mouth, nose, or eyes. Rubbing your nose or eyes can cause a virus on your hands to infect your body.

Make sure your food is well-cooked, especially meat.

Take your vitamins each day.

Get plenty of sleep and exercise. This helps to strengthen your immune system to fight off viruses.

How are viruses treated?

There is LITTLE that doctors can do to treat viruses. In most cases our body's immune system fights off the virus. Scientists have developed vaccines that help our bodies to build up immunity to a specific virus. One example of a vaccine is the flu shot. The flu shot helps the body to develop its own defenses against the flu called antibodies.

Interesting Facts about Viruses

Viruses are not classified in any of the five kingdoms of living things. This means they are not bacteria, fungi, protists, plants, or animals.

Most viruses are so small they cannot be seen with an optical microscope.

The word "virus" comes from the Latin word "virulentus" meaning "poisonous."

Viruses can sometimes attack and kill bacteria.

The first human virus discovered was the yellow fever virus in 1901 by Walter Reed.

A virus that contains RNA instead of DNA is sometimes called a retrovirus.

There are two main types of reproductive cycles for viruses: the lytic cycle and the lysogenic cycle.

Diseases that are caused by a virus with a lytic cycle show symptoms much faster than viruses with a lysogenic cycle.

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ANSWER:

The MAIN role of STOMATA in flower is to allow the uptake of carbon dioxide and to LIMIT the loss of water DUE to evaporation

• use less plastic
• make PAPER bags
• COMPOST out of kitchen WASTE

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Explanation:

ss RNA.................................

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Although the genetic material for most ORGANISMS is double-stranded (ds) DNA, only a minority of plant VIRUSES possess dsDNA GENOMES. Some of the plant viruses have genomes that are composed of single-stranded (ss) DNA. However, the majority of plant viruses do not use DNA at all

ARTIFICIAL system of PLANT CLASSIFICATION was PROPOSED by LINNAEUS

Answer:

some pollen grains or STIGMA might be SPOILED one

Answer:

In your body, these SOLUTES are ions like sodium and potassium. ... A hypotonic solution is one in which the concentration of solutes is GREATER inside the CELL than outside of it, and a HYPERTONIC solution is one where the concentration of solutes is greater outside the cell than inside it.

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ANSWER:green

Explanation because it is DOMINANT CHARACTER that MEANS which can be EXPRESSED .

Answer:

the plants in PRESENCE of chlorophyll take in CO2 and EXHALE O2

Answer:

Characteristics of Monera

• The Monerans are unicellular organisms.
• They contain 70S ribosomes.
• The DNA is naked and is not bound by a nuclear membrane.
• It LACKS organelles like mitochondria, LYSOSOMES, PLASTIDS, GOLGI bodies, endoplasmic reticulum, CENTROSOME, etc.
• They reproduce asexually by binary fission or budding.

Answer ❤️!

. Diffusion is the movement of GASES from the region of HIGHER concentration to region of LOWER concentration . Osmosis is the movement of water from areas of higher concentration to areas of lower concentration. 4.6.

ANSWER:

Trees and FORESTS protect the land from EROSION. They protect homes, farms, and coastlines from strong winds and waves. They make soils fertile, keep air, streams and lagoons CLEAN and clear, and provide HABITATS and food for animals.

CROSSING over is ESSENTIAL for the NORMAL segregation of chromosomes during MEIOSIS. Crossing over ALSO accounts for genetic variation, because due to the swapping of genetic material during crossing over, the chromatids held together by the centromere are no longer identical.

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Answer:

Explanation:

It starts from the stomach and intestines as CAPILLARIES and JOIN to form HEPATIC PORTAL vein