Answer: A) NO increases the rate at which 
molecules are formed.
Explanation:
A catalyst is a substance which increases the rate of a reaction by taking the reaction through a different path which involves lower activation energy and thus more reactant molecules can cross the energy barrier by undergoing collisions and convert to products.
Thus NO will increase the rate of reaction by lowering the activation energy and thus the colllisions among 
and 
molecules will incraese which in turn will lead to formatioon of more molecules.
Butterflies like to drink the sweet nectar from flowers.
Combustion of fossil fuels
Explanation:
The most likely source of the carbon dioxide shown in the graph is the combustion of fossil fuels for both industrial and domestic use.
- Fossil fuels are hydrocarbon units.
- They burn in the presence of oxygen gas to from carbon dioxide and water.
- The level of carbon dioxide has been increasing dramatically with increase in industrialization.
- The fuels are used and needed for the workings of machinery.
- Domestically they are used in heating homes and powering automobiles.
- These processes produce carbon dioxide as a waste product.
learn more:
Green house gas emission brainly.com/question/4580761
#learnwithBrainly
The one that is an example of a solution is : A. an iron alloy
iron alloy consist of minor component that is distributed within the major component, which is the basic requirement for a solution
