Which of these molecules would form a single covalent bond? Group of answer choices

Na3N

NaCl

KCl

Cl2

What do nitrifying bacteria convert

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.

What are the pros and cons of quadrat sampling?