The periodic table has columns that group elements according to their__.

Name ?
properties?
Atomic number?
Mass?

What does it mean if a piece of wood is ripped? it has been water-damaged. it has been cut with the grain. it has been cut against the grain. it has been covered with laminate.

Which of the following is an environmental cost of agriculture? a. agronomyb. cash cropsc. pollutiond. crop rotation

Pollution from one country can affect another. for example, south korea is especially affected by pollution and dust storms that come from