1 4.1 What Is an Ecosystem? I. Ecosystems A. _____________ 1. a group of various _______ that live in the same ______ & ________ with one another B. ___________ 1. A community of ___________ & their physical ___________ C. ________ factors 1. describes __________ factors in ecosystems 2. include once ________ things (_______ & _________)

2 D. _________ Factors 1. ________ factors – physical or ___________ a. oxygen, _______, rocks, _______, sunlight, etc. a. oxygen, _______, rocks, _______, sunlight, etc. 2. Shape ___________ a. ex – organisms in __________ are small because not enough _______ to support _________ animals a. ex – organisms in __________ are small because not enough _______ to support _________ animals 3. ______ -the place where an organisms _____ E. ______________ 1. The ________ of organisms in a given area 2. Physical factors greatly influence _________

3 3. When ecosystems have ________ biodiversity they can _______ damage. a. ex – ______ ________ & ______ _______ a. ex – ______ ________ & ______ _______ II. Succession A. The __________ of one __________ by another at a single place over ________ B. __________ species 1. the ____ organisms to appear in a new habitat 2. often _______, ______ growing, quickly _____________ plants a. ex – ________ & ________ break down __________ rock into soil for other plants a. ex – ________ & ________ break down __________ rock into soil for other plants

4 C. ______________ 1. An ecosystem responds to ________ in a way that ___________ is restored III. Major Biological Communities A. ___________ 1. the average _________ conditions in an area over a _______ period of time 2. ________ & _________ adapt themselves for particular ____________ B. ___________ 1. a ______ region characterized by a specific kind of ________ & certain kinds of __________

5 2. _________ & _________ determine biomes IV. ___________ Biomes A. ___________ Biomes 1. located near ____________ 2. _________ _______ forests a. large amounts of _______ & _____ temps. a. large amounts of _______ & _____ temps. b. greatest _____________ b. greatest _____________ c. ____ the world’s land species live here c. ____ the world’s land species live here 3. ___________ 3. ___________ a. warm & receive ______ rain a. warm & receive ______ rain b. long ____ seasons & short wet seasons b. long ____ seasons & short wet seasons

6 4. Tropical _______ 1. get very little ______ B. Temperate _________ 1. located at ___________, wide temp. ranges 2. Temperate ___________ a. moderate ______ & ______ than savannas 3. Temperate __________ a. receive plenty of _______ b. __________ forests shed leaves in the fall c. __________ forests do not shed needles

7 4. Temperate ___________ a. receive _______ precipitation but have a wide ________ range throughout the year a. receive _______ precipitation but have a wide ________ range throughout the year C. High Latitude Biomes 1. _________ 1. _________ a. coniferous forests in ______,____ climates a. coniferous forests in ______,____ climates 2. __________ a. gets very ______ rain, so plants are ______ a. gets very ______ rain, so plants are ______ b. most water is _________ because it’s ________ most of the year b. most water is _________ because it’s ________ most of the year

8 V. ___________ Ecosytems A. ______________ ecosystems 1. _______, ________, & _________ B. ___________ 1. link ______ & fully ________ ecosystems 2. moderate ________ & _______ the water that flows through them C. __________ 1. area where __________ meets _____ water D. ___________ 1. _________ water of the oceans