Write the main difference between natural environment and man made environment. Give examples

Differentiate between Physical Environment and Cultural Environment.

What is natural environment made up of ?

State the main difference between primary and secondary succession. Give one example of each .

Write the main difference between an acid and a base. With the help of suitable examples explain the term neutralization and the formation of: neutral salts.

Write the main difference between an acid and a base. With the help of suitable examples explain the term neutralization and the formation of: acidic,