Correct the following sentences by adding punctuation where necessary.

Here are the corrected sentences:

a) Education is important; it protects future generations.

b) The learners organized a clean-up exercise; they invited the community.

c) His friend went away, so he felt lonely.

d) Many students support tree planting; others prefer recycling projects.

e) Omondi saw it; he kept quiet.

f) The school planted trees; it also started a waste-sorting programme.

g) Plastic waste blocks drainage systems; flooding occurs during heavy rains.

h) He wanted to see you.