Questions

Strength of concrete increases with increase in water cement ratio as the strength of the cement is directly proportional to water cement ratio.

Tractor was the single most important invention to farmers.

In the process of photosynthesis, plants need the sun's energy, water to make food for themselves in the form of ATP ( adenosine triphosphate ) , which is packages of energy.

Carbon :

coming into the plants ( or algae ) along with water make those ATP into a bigger molecule, which is know as glucose.

Formula: 6 CO2 + 6 H2O + Suns Energy -> glucose + oxygen

Photosynthesis has an affect on the carbon cycle because it reduces the amount of CO2 in the air and redirects it into sugars which feeds animals as well as humans.

Hence, Photosynthesis removes CO2 from the atmosphere and replaces it with O2.

 I have used following 4 types of Methodologies: 

1. Boundary value analysis   

2. Equivalence partitioning   

3. Error guessing   

4. Cause effect graphing

Largest sea in the world is Philippine sea.