Make sense of ecological scales, selection, and ancestry from food webs to phylogenetic trees
3 sections · 5 lessons
Define ecological units from population to biome, then trace how energy moves through food webs and why efficiency drops at each transfer.
2 lessonsAnalyze the finch drought case to separate variation, heritability, and differential fitness, and diagnose natural selection from longitudinal data.
1 lessonCompare homologous and analogous structures, then use character evidence to build phylogenetic relationships and classify clades.
2 lessonsPopulations do not become biomes by label alone, and evolution does not leave meaning in appearance without context. This course develops the core frameworks for reading ecological organization, energy flow, natural selection, structural similarity, and evolutionary relatedness across scales. It is built for learners who want to classify living systems carefully and interpret biological patterns without being fooled by names, shapes, or simple similarity. By the end, the course supports sharper reasoning about how organisms interact, adapt, and fit into the tree of life.
The course covers ecological units from population to biome, energy transfer and trophic efficiency in food webs, and natural selection in the Galápagos finch drought case. It also covers homology versus analogy, character evidence from development and phylogeny, homoplasy, clades, and phylogenetic classification.
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Three findings from decades of learning research shaped how every Fenzo lesson is built.
Average pass rate · Freeman et al., PNAS 2014
What the science says
Students in lecture-only classes are 1.5× more likely to fail.
How Fenzo does it
Every Fenzo lesson is interactive. No passive reading or watching, ever.
You work through itAI does it for you
Skill retention over time · with vs. without practice
What the science says
Offloading thinking to AI erodes the very skills you’re trying to build.
How Fenzo does it
Fenzo makes you do the thinking — guided, but never done for you.
Retrieval practiceRe-reading
Long-term recall · retrieval vs. re-reading
What the science says
Recalling information beats re-reading it for building durable understanding.
How Fenzo does it
Lessons weave in quizzes and recall prompts, so it sticks.