Pastors pay their Social Security and Medicare tax the same way a self-employed person would, through self-employment tax. This tax is 15.3% of income including the housing/parsonage allowance and is calculated on the Schedule SE that is filed with a minister's tax return each year.
Blue-green algae have a high protein, iron, and other mineral content which is absorbed when taken orally. Blue-green algae are being researched for their potential effects on the immune system, swelling (inflammation), and viral infections.
Algaecides are chemicals that kill algae and blue or green algae, when they are added to water. Examples are copper sulphate, iron salts, rosin amine salts and benzalkonium chloride. Algaecides are effective against algae, but are not very usable for algal blooms for environmental reasons.