i need an explanation of OXYGEN CYCLE with a diagram .

" The flow of energy is unidirectional whereas the biogeochemical transfer is cyclic". Explain why?

 explain water cycle with a diagram?????

 can you plz give answers of activity 14.1 from ncert book (chp.14) and its reasons?????

Define Global Warming?

explain role of air in bringing rain

What are the three processes by which oxygen from the atmosphere is used up?

 Please explain Oxygen Cycle?

Are dried leaves living things or non living things? Give reason

describe the carbon cycle in detail with diagram ? its urgent

What are the causes of Soil Erosion?

 write causes and effects of air pollution

mention one method by which living organisms influence the formation of soil?

why is water called a wonder liquid

what is conservation of forest ?

how do forest play an important role in maintaining water cycle?

role of atmosphere in climate control?

describe biosphere physical divisions

What is rain water harvesting? Write a note on advantages of rain water harvesting?

 can meritnation provide answers for the activities given in the ncert text book

activity-14.1 ,14.2,  14.3,  14.9,  14.10 , 14.11  (now answer section)

please give me the answers soon....

1 Draw a well labelled diagram to show carbon cycle in nature.

2What causes acid rain?

3What is humus? What is its function in the soil?

4What is biological fixation? How is it different from nitrification? Give an E.g. Of organism involved in each of these?

5What is contribution of photosynthesis in carbon cycle?

6Draw a well labelled diagram to show N2 cycle in nature?

 how does water help in formation of soil?

write a paragraph for about 100-130 words on endangered species and steps to preserve animals.

short note on water cycle

If there is no atmosphere around the earth, what will happen to its temperature?

what is greenhouse effect

Can you please give me the answers of activity 14.3 from NCERT book (page 191) chapter 14 and its reason. Please make it as quick as possible!!!!!!

 explain the role of water in soil formation????/

where to find online nasa astronomy olympiad sample papers?

how does soil formation takes place in nature explain

Why is atmosphere essential for life?

what decides whether this movement of air will be in the form of a gentle breeze a strong wind or a terrible storm?

explain the process of soil formation

Acid rain and smog are said to be the consequences of air pollution. How are they

Please explain the Nitrogen cycle as per NCERT Science textbook in simple language.

explain oxygen cycle

what are two types of natural resource ? define and give example of each

 What is humus what is the role of earthworm in increasing the quality of humus

Definition of air pollution and water pollution

if atmosphere is held by the gravity, then why is it not falling into earth?? as gravity pulls everything towards earth. Then what is the force acting opposite to gravity????

Name two biologically important compounds that contain both oxygen andnitrogen. what is the role of nitrogen fixing bacteria?

what can we do to reduce air pollution, water pollution, soil pollution and noise pollution

What is the difference between eutrophication and biomagnification?

explain carbon cycle and write its importances ?

Many human activities lead to increasing levels of pollution of air, water bodies and soil. Isolating these activities to specific and limited areas would not help in reducing pollution. Justify the statement giving at least five reasons.

give at least 5 effects of water pollution

• Take an empty bottle of the sort in which bottled water is sold. Pour about 5-10 mL of water into it and close the bottle tightly. Shake it well or leave it out in the Sun for ten minutes. This causes the air in the bottle to be saturated with water vapour.
• Now, take a lighted incense stick. Open the cap of the bottle and allow some of the smoke from the incense stick to enter the bottle. Quickly close the bottle once more.Make sure that the cap is fitting tightly. Press the bottle hard between your hands and crush it as much as possible. Wait for a few seconds and release the bottle. Again press the bottle as hard as you can.
• • When did you observe that the air inside seemed to become foggy?
  • When does this fog disappear?
  • When is the pressure inside the bottle higher?
  • Is the fog observed when the pressure in the bottle is high or when it is low?
  • What is the need for smoke particles inside the bottle for this experiment?
  • What might happen if you do the experiment without the smoke from the incense stick? Now try it and check if the prediction was correct. What might be happening in the above experiment in the absence of smoke particles?

State any two harmful effects of air and water pollution ?

how is the quality of air affected and how does this change in quality affect us and other life forms?

can i get an essay on the topic 'science is a boon not a curse'..........plz answer me as soon as u can?

soil formation is done by both biotic & abiotic factors.List the names of these factors by classifying them as biotic & abiotic factors.

what is the role of respiration in watercycle

What are the two forms of oxygen found in the atmosphere ? What is their importance ?

 What is ammonification,nitrification and denitrification in nitrogen cycle

 What is Biosphere? What are the main subdivisions of biosphere?

write a short note on water pollution, air pollution $ soil pollution?????

mention causes for depletion of ozone layer

what is atmosphere? give its major divisions

can someone explain me the carbon cycle please ?

acid rain and smog are said to be constituents of air pollution . how are they caused .what are the ill effects of breathing polluted air on human health.

explain water cycle with a diagram????/

 laws of conservation of energy? 

Mention two ways in which carbondioxide is fixed in environment .

what is ozone shield? how is it being corroded

How is CO₂ fixed in atmosphere?

what is rhizobium and wat r its special features??

How atmosphere acts like a blanket

Is rain always accompanied by thunder and lightning? If not, in which season do we get more thunder and lightning with the rain ?

Examples for non leguminous plants.

what r the harmful effect of global warming ?

account for the following:

• combustion of fossil fuels increases the amount of suspended particles in air.
• flow of energy is undirectional whereas biogiochemical transfer is cyclic.

Ways to prevent soil erosion.

Following are few organisms lichens, mosses, mango tree, cactus which among these can grow on stones and help in soil formation? Write the mode of their action for making the soil