Answer:
C. porous
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<u>Answer:</u> The net ionic equation for the given reaction is 
<u>Explanation:</u>
Net ionic equation of any reaction does not include any spectator ions.
Spectator ions are the ions which do not get involved in a chemical equation. It is also defined as the ions that are found on both the sides of the chemical reaction when it is present in ionic form.
The chemical equation for the reaction of hydrochloric acid and potassium sulfite is given as:

Ionic form of the above equation follows:

As, potassium and chloride ions are present on both the sides of the reaction, thus, it will not be present in the net ionic equation.
The net ionic equation for the above reaction follows:

Hence, the net ionic equation for the given reaction is written above.
B. Deforestation and burning of fossil fuels. <span />
Aluminum foil I think but if not goodluck :)
Answer:
The population of birds would Decrease
Explanation:
A birds main source of food include: Insects, worms, and grubs. Seeds, grasses, and plant material. Nectar and pollen
It also depends on what bird it is but with any species if there main source of food decrease then they decrease or move out of the area.
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