Which of the following equations defines population size?   Question 3 options:    (Pt+1) = B - I + D + I – E   (Pt1) = N2 + I - D + B – E   (Pt2) = Pt1 + B - D + I – E   (Pt) = B - I + D – E   (Pt+1) = B - I + D + I – E

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Communities and Ecosystems

Ecology contains two words: Eikos means dwelling, and logy means to study, so the combined meaning is studying habitat or living.