Can anyone help me on this questions please

Iwill give brainiest to first person who gets it ! what are 3 basic types of interactions we see in an ecosystem?

Why do german shepherds shed so much

Error analysis: what might be the reason that some of your percentages didn't exactly match your predicted results? gametes aren't responsible for inheritance. mice don't have large litters, so the sample size was not large enough. the wrong type of mice were used.