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  • 1 answers

Preeti Dabral 3 weeks, 5 days ago

There are four main types of air pollution sources: mobile sources – such as cars, buses, planes, trucks, and trains. stationary sources – such as power plants, oil refineries, industrial facilities, and factories. area sources – such as agricultural areas, cities, and wood burning fireplaces.

Harmful effects of air pollution depend on the concentration of pollutants, duration of exposure to the pollutants and types of pollutants that caused pollution.

  1. In plants, it causes fruit damage, leaf damage, chlorosis, necrosis, mottled spots on leaves, less yield of crops and causes premature death of plants, etc.
  2. In humans, it causes respiratory ailments like asthma, hay fever, allergic diseases, etc., cancer and genetic mutations.
  3. Carbon monoxide (CO) released as a pollutant can combine with haemoglobin thus, preventing the supply of O2 to the cells and causing death due to asphyxiation because it leads to damage of the brain.
  4. The burning of fossil fuels, exhaust from automobiles, etc., release SO2 and NO2 into the atmosphere. These gases are oxidised to sulphuric acid and nitric acid in the air. They get dissolved with the rainwater falling on the earth and form acid rain.
  5. The various vehicle such as car, buses, trucks running on petrol release harmful gases.
  • 4 answers

Monika Tomar 3 weeks ago

O2 is the scientific form of oxygen
Oxygen

B.Ashwinth. Cbs 4 weeks ago

Ok I got answer 😃 oxygen

B.Ashwinth. Cbs 4 weeks ago

Plz answer
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  • 3 answers

Issy Lizzy 3 weeks, 5 days ago

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Naina Agarwal 3 weeks, 5 days ago

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Ayush 👤 4 weeks, 1 day ago

Sasriya kal
  • 5 answers

. . 3 weeks ago

When the male gamete which is sperm and the female gamete which is ovum fuse together ( in the middle of oviduct) they form a zygote. The zygote then divides repeatedly and forms embryo. The embryo fixes itself in the wall of uterus and develops into foetus.
Thankyou.....

Naman Bansal 4 weeks, 1 day ago

In the process of fertilisation,sperms come in contact with egg (ova), one of the sperms may fuse egg. the nuclei of sperm,the egg fuse to form a single nucleus returning in the to the formation of fertilised egg is called zygote.

Aniruddh Patel 4 weeks, 1 day ago

This results in the formation of zygote

Aniruddh Patel 4 weeks, 1 day ago

The fusion of male (sperm) and female (ova) in female it is called fertilization
  • 1 answers

Naman Bansal 4 weeks, 1 day ago

In the process one or more small bulb like overgrowth are bulges on the body. This bulb like structure is called buds. These buds are responsible for giving rise to new individual.ex Hydra
  • 5 answers

Aryan Irphale 4 weeks, 1 day ago

Infinity

Ajit Kharwar 1 month ago

That depends upon the angle between the mirror, let's consider the angle between the mirrors are 0° i.e. they are parallel to each other then the number of images formed will be infinity and if the angle between the mirrors is 90° i.e. perpendicular to each other then the number of images formed will be 3.

Aayushi Devda 1 month ago

Multiple
If the mirrors are parallel to each other then images formed will be infinite
Infinity
  • 5 answers

Monika Tomar 3 weeks ago

And by the way thanks for asking but no need

Monika Tomar 3 weeks ago

No need

Pirzada Hanan 3 weeks, 3 days ago

Sakri ka mahal taj Mahal ki kay sahmat hai

Aditya Sharma 4 weeks, 1 day ago

Non thank
No thanks
  • 5 answers

Komal Choudhary 1 month ago

Hormones

Sakshi Mehta 1 month ago

Dad is bad

Shubhankar Biswal 1 month ago

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Hormones
Hormone
  • 2 answers

Monika Tomar 3 weeks ago

Ok

Shubhankar Biswal 1 month ago

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  • 3 answers

Debanjan Deb 3 weeks, 5 days ago

All school bag have broad straps because we know larger the are lesser the pressure . And no one wants have pressure in shoulder 😅
All school bags have broad shoulder strap there will be less pressure on our shoulders exerted by the bag's straps

Mantasha Shahin 1 month ago

All school bags have broad strap to reduce the pressure exerted by the things inside the bag ,if the straps would not be broad then area would be less so pressure exerted would be higher this can cause severe pain in the shoulder and back ,thus bags have broad straps.
  • 5 answers

Debanjan Deb 3 weeks, 5 days ago

Sirius
Proxima cantauri
Sirius is the brightest star in the universe

Mantasha Shahin 1 month ago

Sirius is the brightest star in the universe.

Anchal Kosamiya 1 month ago

Canopus
  • 2 answers

Preeti Dabral 1 month ago

Intensity of laser beam is very high, as it carries large amount of energy. It is harmful for eyes and can cause permanent damage. One should not look at laser beam directly or indirectly for a longer period.

Chhavi P 1 month ago

What is gravitational force
  • 2 answers

Aradhya Mohanty 1 month, 1 week ago

It is highly flammable

Aradhya Mohanty 1 month, 1 week ago

No
  • 1 answers

Taksh Bisen 1 month, 1 week ago

Yes Of course
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  • 4 answers

Taksh Bisen 1 month, 1 week ago

Apni life me sabse khusi wala pal yaad kro

Taksh Bisen 1 month, 1 week ago

Always say yes to everyone and see what happen you Will extreme happy by your life

Swati Sucharita 1 month, 1 week ago

Your life is your greatest happiness

Anushka Rana 1 month, 1 week ago

In your own life 😉
  • 1 answers

Preeti Dabral 5 days, 17 hours ago

When a force is applied on an object, it may change its speed. If the applied force is in the direction of motion, the speed of the object increases. If the force is applied in the direction opposite to the motion, then it results in a decrease in the speed of the object.

  • 3 answers

Taksh Bisen 1 month, 1 week ago

New moon Cresent moon First quarter Gibbous moon Full moon

Aditya Goyal 1 month, 1 week ago

Give me your insta I'd

Ridhima Verma 1 month ago

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  • 2 answers

Binod Binod 1 month ago

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Anshuman Yadav 1 month, 1 week ago

Force brings about a change in shape of iron. Which is used make many type of metallic material for example iron rods .
  • 1 answers

Sanvi Sharma 1 month, 1 week ago

Clorine kills all the microbes present in the water and makes it safe for drinking. So, clorine is used to purify water.
  • 2 answers

Taksh Bisen 1 month, 1 week ago

The depositing of one metal over anothr

Mansvi Jhajharia 1 month, 1 week ago

It is a type of slow process in which iron gets a reddish-brown coating. It is an example of slow combustion too.
  • 3 answers

Arshdeep Kaur 1 month, 1 week ago

Contamination of Water by unsirable properties is known as water pollution

Anshuman Yadav 1 month ago

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वर्षा महतो 1 month, 2 weeks ago

व्हाट इज ग्रीन हाउस
  • 3 answers

Sanvi Sharma 1 month, 1 week ago

Metalloids are those elements that have the both characteristics of metals and nonmetals

Ritesh Rajput 1 month, 2 weeks ago

Elements that have the characteristics of both Metals and Non metals

Tarun Singh 1 month, 2 weeks ago

10x
  • 1 answers

Preeti Dabral 4 days, 13 hours ago

First of all we take a chart paper or stiff paper. Let the sheet project a little beyond the edge of the table.

Perform activity again. This time use a sheet of stiff paper or a chart paper. Let the sheet project a little beyond the edge of the Table.
Cut the projecting portion of the sheet in the middle. Look at the reflected ray. Make sure that the reflected ray extends to the projected portion of the paper. Bend that part of the projected portion on which the reflected ray falls. Bring the paper back to the original position. When the whole sheet of paper is spread on the table, it represents one plane. The incident ray, the normal at the point of incidence and the reflected ray are all in the plane when you bend the paper you create a plane different from the plane in which the incident ray and the normal lie. They do not see the reflected ray. What does it indicate? It indicates that the incident ray, the normal at the point of incidence and the reflected ray all lie in the same plane. This is another law of reflection.

  • 5 answers

Maya Pareek 1 month, 2 weeks ago

The reaction in which more reactive metal can displace less reactive metal from its salt.

Haider Ali 1 month, 2 weeks ago

A displacement reaction is the one wherein the atom or a set of atoms is displaced by another atom in a molecule. For instance, when iron is added to a copper sulphate solution, it displaces the copper metal. A + B-C → A-C + B.

Ritesh Rajput 1 month, 2 weeks ago

Reaction in which more reactive metal displaces a less reactive metal form it,s salt solution

Chitranshi Sharma 1 month, 2 weeks ago

Displacement reaction

Kartik Sharma 1 month, 3 weeks ago

Reaction in which high reactive metals displaces low reactive metals in it aqueous solution
  • 4 answers

Arshdeep Kaur 1 month, 1 week ago

A menstruation cycle starts from menrache and ends from menopause

Kanishka Verma 1 month, 2 weeks ago

In female the menstrual cycle starts atpuperty

Bhargavi Yadav 1 month, 3 weeks ago

I don't know

Anushka More 1 month, 3 weeks ago

I don't know

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