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Explain : Ozone layer depletion.

Posted by Rohit Mali 4 years, 4 months ago

1 answers

Pra Jit 4 years, 4 months ago

Ozone layer or the stratosphere which is the second layer after the troposphere which protects us from the UV radiations from the sun but these days the stratosphere is lossing is power because of lot of AIR Pollution

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What is echinodermata. (Diversity in living organisms)

Posted by Shrawani Deshmukh✍️ 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Soumyashree Pasodi 4 years, 4 months ago

This lesson is deleted

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A bullet of mass 10 gram travelling horizontally with a velocity of 150 metre per second strikes a stationary wooden block and comes to rest in 0.03 seconds calculate the distance of penetration of the bullets into the block also calculate the magnitude of the force exerted by the wooden block on the bullet

Posted by Mitali Sharma 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Shivam Yadav 4 years, 4 months ago

Czsp.r, m kk t aup t

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Aman Baunthiyal 4 years, 4 months ago

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Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when it accelerates from rest?

Posted by Abin Anto Benny 4 years, 4 months ago

CBSE > Class 09 > Science

3 answers

Abin Anto Benny 4 years, 4 months ago

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Aaditya Kumar Shrivastava 4 years, 4 months ago

Ssdghhhhhhjjj

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Sabiya Khan 4 years, 4 months ago

When a moving bus brakes to stop, our feet comes to rest with the bus .But upper part of your body continues to move forward on account of inertia of motion. That is why we tend to fall in the backward direction .
However, when the bus accelerates from rest, lower part of our body moves with bus. The upper part of body tries to maintain itself at rest on account of inertia of rest. Therefore, we tend to fall backwards.

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When a ray light passes through a solution and it's not visible composition of its constituents

Posted by Tanisha Taya 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Abin Anto Benny 4 years, 4 months ago

Because the particles of a solution are smaller than 10 metre in diameter. such small particles do not scatter a beam of light passing through them. So, the path of light is not visible in a solution.

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What will happen to the body without cells

Posted by V. Ridhanya Catherine 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 4 years, 4 months ago

Cells make up tissues, like connective tissue, skeletal tissue, nervous tissue and fatty tissue. Tissues make up organs like your heart, your liver, your brain, spleen, stomach and so on. With no cells, there are no tissues or organs. Humans would not exist.

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1. Why mature RBCs do not have nucleus & some other organelles? What is the role of Haemoglobin?

Posted by Adarsh Kumar 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Dheeraj . S 4 years, 4 months ago

Beacuz if thre is nucleus in rbc then it will consume oxygen so there is on heamohlobin and hemohlobin helps in transfer of oxygen to every part of body

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Diffrrence between osmis and diffusion

Posted by Vasudev Jadhav 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Purvi Gupta 4 years, 4 months ago

Osmosis=The movement of water molecules from high concentration to low concentration. Diffusion=The movement of substance from high concentration to low concentration.

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Diffrrence between osmis and diffuy

Posted by Vasudev Jadhav 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Sabiya Khan 4 years, 4 months ago

In diffusion, particles move from an area of higher concentration to one of lower concentration until equilibrium is reached. In Osmosis , a semipermeable membrane is present, so only the solvent molecules are free to move to equalize concentration.

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Give three criteria of plasma

Posted by Neha Rathor 4 years, 4 months ago

CBSE > Class 09 > Science

0 answers

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What is the name of the changing of Solid to gas state?

Posted by Ankush Chatterjee 4 years, 4 months ago

CBSE > Class 09 > Science

5 answers

Rohit Singh 4 years, 4 months ago

Sublimation

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V. Ridhanya Catherine 4 years, 4 months ago

Sunlblimation

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Nushrat Akeel Khan 4 years, 4 months ago

Sublimation

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Shanvi Sharma 4 years, 4 months ago

Sublimation

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Husan Preet 4 years, 4 months ago

sublimation

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What is cytiplasm

Posted by Pratibha Singh 4 years, 4 months ago

CBSE > Class 09 > Science

4 answers

Sabiya Khan 4 years, 4 months ago

Cytoplasm is tha fluid content filled in a cell.

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Purvi Gupta 4 years, 4 months ago

The fuild content filled in cell

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Savreen Kaur 4 years, 4 months ago

Given in ur book... Kindly open and get the answer.. it's cytoplasm

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Shanvi Sharma 4 years, 4 months ago

Cytoplasm

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What are mithochondrian

Posted by Nogeswar Reang 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Sathana Xvh 4 years, 4 months ago

Mitochondria is a double membrane bound organelles which is known as powerhouse of the cell because it produce ATP adenosine triphosphate it as his own DNA and ribosomes

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What is matrix in biology?

Posted by Ekta Agrawal 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Ekta Agrawal 4 years, 4 months ago

Matrix is the tissue in animal or plant cells in which specialized structures are fixed to a surrounding mass.matrix (plural: matrices) is the material (or tissue) in between a eukaryotic organism's cells. ... It is found in various connective tissues. It is generally used as a jelly-like structure instead of cytoplasm in connective tissue.

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Animal cell digram

Posted by Tejaswi Yashaswi Kale 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Savreen Kaur 4 years, 4 months ago

Given in book

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Ekta Agrawal 4 years, 4 months ago

Sorry I can't help you

2Thank You

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8 Liquid metal at room temperature is ? liquid soap paint mercury honey

Posted by T. Homesh 4 years, 4 months ago

CBSE > Class 09 > Science

4 answers

Sabiya Khan 4 years, 4 months ago

Mercury

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Ekta Agrawal 4 years, 4 months ago

What is this question?

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Rishabh P 4 years, 4 months ago

Mercury

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Priyanshi Pal 4 years, 4 months ago

Kavya ki jivani

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The slope of displacemennt time graph of car parked in a parking area is

Posted by Lucky Swapnil 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Aheli Basu 4 years, 4 months ago

As the car is parked it doesn't moves, so the velocity is 0. Velocity is the slope of displacement time graph.

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Difference between inertia and mass

Posted by Samadhan Patil 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Gagan Kaur 4 years, 4 months ago

INERTIA is the natural tendency of an object to remain at rest or in motion at a constant speed along a straight line,whereas the MASS of an object is a quantitative measure of inertia.

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Separation of funnel diagram

Posted by Krishna Agarwal 4 years, 4 months ago

CBSE > Class 09 > Science

0 answers

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Why can't wemons run faster than men? Is any scientific is there.

Posted by V. Ridhanya Catherine 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Rishabh P 4 years, 4 months ago

Because of their bobs

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How many state of matter and names

Posted by Chaudhary Kiran 4 years, 4 months ago

CBSE > Class 09 > Science

5 answers

Gagan Kaur 4 years, 4 months ago

There are three states of matter, namely solid, liquid and gas

2Thank You

Anurag Kumar Mishra 4 years, 4 months ago

There are three types of states of matter that are given below: 1. Solid 2.Liquid 3.Gas Note? All have the different properties for more refer NCERT Book in detail

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Anushka Yadav 4 years, 4 months ago

there are 3 main types of matter 1. solid 2. liquid 3. gas but there is 2 new types of matter discoverd 1. plasma 2. bose einstein condensate

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V. Ridhanya Catherine 4 years, 4 months ago

Three type of matter *liquid *solid *gas

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V K 4 years, 4 months ago

THERE ARE THREE TYPES OF MATTER.....ARE 1. Liquid.... 2.solid..... 3.gas

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What is dylisis