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CHAPTER 9 Ecosystem 298 11.3 Genes and Alleles 342
11.4 Inheritance in Humans 342
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9.1 Community and Ecosystem 299 SPM Practices 352
9.2 Population Ecology 315
SPM Practices 317
CHAPTER 355
12 Variation
CHAPTER
10 Environmental
Sustainability 320 12.1 Types and Factors 356
of Variation
12.2 Variation in Humans 360
10.1 Threats to the Environment 321
10.2 Preservation, Conservation 12.3 Mutation 362
and Restoration of SPM Practices 368
Ecosystems 327
10.3 Practices in Environmental
Sustainability 327
10.4 Green Technology 329 CHAPTER 371
13 Genetic Technology
SPM Practices 331
13.1 Genetic Engineering 372
13.2 Biotechnology 374
CHAPTER 335 SPM Practices 378
11 Inheritance
SPM Model Paper 380
11.1 Monohybrid Inheritance 336
11.2 Dihybrid Inheritance 340
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