biology or botany questions?

[ava j]

my teacher gave us these to answer..the chapter in my book is called "The Tree of Life - An Introduction to Biological Diversity"

1. Describe the concept of organic evolution (chemical)
the steps are Synthesis of organic compounds on early earth, Abiotic synthesis of polymers, Protobionts, and the "RNA world" and the Dawn of Natural Selection...but i need to explain them

2. Describe the basic developements of "life" on early Earth (protobionts, what can they do, what are they capable of, why are they important)

3. Describe early "life" forms

4. Talk your way through the endosymbiotic theory

5. Discuss why the advent of photosynthesis changed the earth so much

6. Describe the importance of cellular respiration

if you are unable to answer all of these, that is fine..any answers will be of great help. Thank you.