What is the difference between an environment and an ecosystem?

Which of the following best explains the difference between an absolute monarchy and an oligarchy? apex

The ozone hole is at its biggest each year in the ? hemisphere in the ? season.

You have been tasked with sorting the rock samples shown into three categories, with two rocks in each category. what attribute would you use to sort these rocks? which rocks would be in each category? rocks: obsidian, coquina limestone, granite, soapstone,pumice, and gneiss.