What is the method of harvesting trees where mature trees are left intact that provide shelter to younger seedling trees called ?? It's for a crossword puzzle and the answer should be two words and together there should be 19 letters

Which characteristics can be used to differentiate star systems? check all that apply.

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.

What is the chemical name of the compound ti2o3?