NGSS
HS-LS2-7
8 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Environmental Science · Chapter 3 · Lesson 2
What the system does that nobody is billed for.
Environmental Science · Chapter 3 · Lesson 4
Habitat Loss and Fragmentation
The same total area, cut into pieces, is not the same habitat.
Environmental Science · Chapter 3 · Lesson 5
Protecting a species is usually protecting a system.
Environmental Science · Chapter 5 · Lesson 2
Soil forms at a centimeter a century.
Environmental Science · Chapter 5 · Lesson 4
A stock can collapse while the catch looks healthy.
Environmental Science · Chapter 7 · Lesson 3
Water Pollution and Eutrophication
The damage comes from the decay, not the bloom.
Environmental Science · Chapter 8 · Lesson 4
Most introductions fail; the few that succeed are the problem.
Biology · Chapter 8 · Lesson 5
Reasoning about it, rather than being told.