No work can be successful without planning. Justify.

We can live without proteins.

No cell can live without

Can work be done by a system without changing its volume?

No enterprise can achieve its objectives without systematic planning.' Do you agree with this statement? Give any five reasons in support of your answer.

Primary succession on the rocks is called xerosere. Answer the following . (i) Name the pioneer community (ii) Organic acids have important role in this succession Justify.