Energy and matter

Question 1

What is the composition of air?

Answer 1

It consists of 78% nitrogen, 21% oxygen and 1 % other gases and water vapour

Question 2

What are the chemical equations and processes for photosynthesis and respiration?

Answer 2

Photosynthesis
6CO2+6H2O->C6H12O6+6O2
Respiration
C6H12O+6O2->6H2O

Question 3

what are the laws of Thermodynamics on energy and matter?

Answer 3

1. Energy cannot be created or destroyed, it only changes form
2. During every transformation, some energy is given off as heat. But heat is eventually lost to the atomosphere and is no longer available to ecosystems