Could you take 2 elements from the periodic table of elements, and possibly make one of other 116 elements that are on the table? and by the way, just to check, how many elements are there on the periodic table of elements?

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

Diamond will scratch quartz. true or false

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.