Which of the following statements is correct? O Air is a mixture and table salt is a compound
O Table salt is a mixture and carbon is a compound.
O Carbon is a mixture and air is a compound.
O Air is a mixture and carbon is a compound

The first one

Air is a mixture and table salt is a compound

Explanation:

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.