A gas giant is a large planet composed mostly of gases oftentimes are hydrogen and helium. The gas giants of our solar system are Jupiter, Saturn, Uranus and Neptune. They all have very, very extended, thick atmospheres, dominated by hydrogen and its compounds. As a result, they are much more massive and larger than the terrestial bodies.
The sugar created from photosynthesis is glucose and another thing created from photosynthesis is oxygen.
Hypothesis:
As the tomato plant grows, nitrogen levels in the soil will decrease
The answer is b. This can be remembered if you know that photosynthesis creates oxygen. Just remember that 'phytoplankton' starts with 'ph' just like 'photosynthesis', and you'll know that phytoplakton also create oxygen.
Static friction this should help :)