Ecology

Use this for “From this life table, what are R₀ and the generation time?”

Use this for “40 marked, 50 caught later, 8 of them marked. How many are in the pond?”

Use this for “K₁ = 500, K₂ = 400, α = 0.5, β = 0.6. Do the species coexist, and at what sizes?”

Use this for “Barnacles ride on a whale, which is neither helped nor harmed. What kind of interaction is this?”

Use this for “A reservoir holds 750 Gt of carbon and exchanges 120 Gt a year. How long does carbon stay?”

Use this for “Which microbes turn ammonium into nitrate, and which return nitrogen to the air?”

Use this for “If a reserve keeps half its area and z = 0.25, what share of species remains?”