i need an explanation of OXYGEN CYCLE with a diagram .

 explain water cycle with a diagram?????

Define Global Warming?

 Please explain Oxygen Cycle?

describe the carbon cycle in detail with diagram ? its urgent

What are the causes of Soil Erosion?

 write causes and effects of air pollution

why is water called a wonder liquid

what is conservation of forest ?

role of atmosphere in climate control?

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

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?

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

short note on water cycle

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!!!!!!

where to find online nasa astronomy olympiad sample papers?

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

Why is atmosphere essential for life?

explain the process of soil formation

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

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?

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

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

explain carbon cycle and write its importances ?

give at least 5 effects of water pollution

State any two harmful effects of air and water pollution ?

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

 What is ammonification,nitrification and denitrification in nitrogen cycle

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

mention causes for depletion of ozone layer

explain water cycle with a diagram????/

can someone explain me the carbon cycle please ?

Mention two ways in which carbondioxide is fixed in environment .

How is CO₂ fixed in atmosphere?

what is rhizobium and wat r its special features??

How atmosphere acts like a blanket

Examples for non leguminous plants.

what r the harmful effect of global warming ?

Ways to prevent soil erosion.