This could be one of two things, I need a bit more information, but perhaps you can decide.
Drip irrigation otherwise called trickle irrigation delivers water using tubes and emitters to the base of the plant. Subsurface irrigation uses a combination of tubes and emitters and is buried under ground. Good luck
The two elements are FLUORINE AND CHLORINE. These two elements have similar characteristics because they belong to the same group in the periodic table.
On the periodic table, elements with similar properties are grouped together in the same group. Both chlorine and fluorine belongs to the halogen group.
Heroin causes liver disease and dysfunction. Infections are likely to occur but not limited to sharing needles.
Be at least 18 years old at the time of filing Form N-400, Application for Naturalization.
Be a permanent resident (have a “Green Card”) for at least 5 years.
Show that you have lived for at least 3 months in the state or USCIS district where you apply.
Demonstrate continuous residence in the United States for at least 5 years immediately preceding the date of filing Form N-400.
Show that you have been physically present in the United States for at least 30 months out of the 5 years immediately preceding the date of filing Form N-400.
Be able to read, write, and speak basic English.
Have a basic understanding of U.S. history and government (civics).
Be a person of good moral character.
Demonstrate an attachment to the principles and ideals of the U.S. Constitution.
