Anything added to the environment that is harmful to living things is ?

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind

What material did the moon come from?

Which step is not included in the step approach to calculating the greatest common divisor?