NGSS
HS-LS2-1
3 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Environmental Science · Chapter 4 · Lesson 1
Exponential and Logistic Growth
Two per cent a year doubles in thirty-five.
Environmental Science · Chapter 4 · Lesson 2
Carrying Capacity and Limiting Factors
A ceiling that moves, and can be lowered by hitting it.
Biology · Chapter 8 · Lesson 1
Nothing grows without limit.