Barrons AP Environmental Science

Savanna is grassland with scattered individual trees. Savannas cover almost half the surface of Africa and lar ...

plains and prairies (tall grasses) of central North America. Temperate grasslands have hot summers and cold ...

cottonwoods, oaks, and willows grow in river valleys with some species of flowers growing amon ...

The tundra is the coldest of all the biomes. It is characterized by extremely low temperatures, little precipitati ...

Figure 4.31 Tundra food web Because of the unique conditions found in the Arctic tundra, the bio ...

and finer material. When water saturates the upper surface, bogs and ponds may form, providing moisture ...

■ Exploration of oil, gas, and minerals and the construction of pipelines and roads can cause physical ...

– large numbers of different species – complex food webs involving a variety of ecological niches Biodivers ...

species cannot survive. renewable energy (wind, solar) – Require scrubbers for all industries that burn coal Deforest ...

successfully with changes in the environment. testing and research before allowing GMOs to be used – Require package ...

generations. Geometric (or exponential) increase in population If all offspring survived, there would be astronomi ...

Figure 4.32 Evolutionary (phylogenetic) tree One common factor of why organisms move is to disperse to new ...

populations expand into new areas. A number of processes can initiate this process, including distu ...

Figure 4.33 Stages of succession in a temperate deciduous forest. The time span from annual plants to ...

macroenvironmental changes (fires, floods, etc.). communities have adequately prepared the soil. Life span of seed Long. ...

plants from environmental stress easily come back. Seed dispersal Widespread. Limited in range. Species diversity L ...

(A) Deserts (B) Grasslands (C) Boreal forests (D) Open oceans (E) Estuaries All of the following are factors that in ...

(E) All of the above statements are true. The biggest threat to species is (A) low reproductive rates (B) disease (C) ...

(C) the hours of sunlight reaching a particular region (D) changes in temperature and amount of rainfall (E) the ...

(E) ecosystem For Question 20, refer to the shaded locations in the world map below. The darker shaded areas in ...