I thought it would be useful to gather together useful virtual labs. They are not my creation and I will give full credit to the creators and just place a link to their sites. Often virtual labs are created for fairly technical aspects of biology but I've found a few that are useful for ESS.
I know some teachers struggle to resource the practical nature of this course or are less familiar with techniques as they come from different backgrounds. You can use these to supplement your own knowledge or your practical scheme of work.
Lizard Evolution Virtual Lab (topic 3)
Stickleback Evolution Virtual Lab (topic 3)
Environmental Science Investigation - salmon and global warming (topic 2 and topic 7)
Ocean Acidification (topic 7, topic 2 and topic 3)
Classifying Arthropods (topic 2)
Dinosaur Dig (topic 3 and 2)
Plant transpiration (topic 2 - hydrological cycle)
Population Biology (topic 2)
Tracking Grizzlies (topic 2 - Lincoln Index and topic 3 - conservation biology)
Model Ecosystems (topic 2 - a great practical application of ecological pyramids and energy conversion efficiency)
These are for AP Biology but the dissolved oxygen lab is appropriate.
Photosynthesis simulation with different colour lights (topic 2 though more biology than ESS)
Measuring the rate of photosynthesis (nice and simple - good for ESS - could link to turbidity for an IA introduction). (topic 2)
Studying Photosynthesis (only 5 minutes for free from Gizmos) (topic 2)