In this Grade 7 Life Science lesson from Chapter 14, students learn how Earth's major land and water biomes — including tundra, taiga, desert, grassland, and others — are classified by climate, soil type, and plant life. Students explore key vocabulary such as biome, coniferous, deciduous, and estuary, and examine how abiotic factors like temperature, precipitation, and soil shape the ecosystems within each biome. The lesson builds on prior knowledge of energy flow and feeding relationships to show why similar biomes around the world support similar communities of organisms.
Section 1
Biomes Organize Earth's Diverse Ecosystems
Large geographic regions called biomes share similar climate, soil, and plant life. Six major land biomes and several aquatic biomes contain numerous smaller ecosystems with similar characteristics.
Section 2
Climate Shapes Plant and Animal Communities
Temperature ranges and precipitation patterns determine which plants can survive in a region. Plants adapted to specific conditions support animal communities that form distinctive ecosystems within biomes.
Section 3
Trees Adapt to Survive Environmental Challenges
Coniferous trees keep needles year-round in cold taiga regions, while deciduous trees drop leaves to conserve energy during winter. Tropical trees maintain leaves continuously in warm, rainy conditions.
Section 4
Water Bodies Support Distinctive Life Forms
Freshwater biomes (rivers, lakes, wetlands) and marine biomes (coastal, open, and deep ocean) support different organisms based on water depth, movement, and salt content.
Section 5
Producers Generate Energy for Ecosystem Food Webs
Plants dominate land and shallow water ecosystems as energy producers, while microscopic phytoplankton serve as the foundation for deep water ecosystems where sunlight doesn't reach the bottom.
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Section 1
Biomes Organize Earth's Diverse Ecosystems
Large geographic regions called biomes share similar climate, soil, and plant life. Six major land biomes and several aquatic biomes contain numerous smaller ecosystems with similar characteristics.
Section 2
Climate Shapes Plant and Animal Communities
Temperature ranges and precipitation patterns determine which plants can survive in a region. Plants adapted to specific conditions support animal communities that form distinctive ecosystems within biomes.
Section 3
Trees Adapt to Survive Environmental Challenges
Coniferous trees keep needles year-round in cold taiga regions, while deciduous trees drop leaves to conserve energy during winter. Tropical trees maintain leaves continuously in warm, rainy conditions.
Section 4
Water Bodies Support Distinctive Life Forms
Freshwater biomes (rivers, lakes, wetlands) and marine biomes (coastal, open, and deep ocean) support different organisms based on water depth, movement, and salt content.
Section 5
Producers Generate Energy for Ecosystem Food Webs
Plants dominate land and shallow water ecosystems as energy producers, while microscopic phytoplankton serve as the foundation for deep water ecosystems where sunlight doesn't reach the bottom.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter