Concepts in BiologyWm. C. Brown Publishers, 1991 - 535 страница Concepts in Biology is a short, student-friendly text organized in a traditional manner. It has very little botany and presents a human-oriented approach to the animal unit. Professors and students appreciate the low cost of this title, and that it is written for students who are not biology majors. |
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Страница 252
... Humans have one of the slowest infant growth rates , and human milk contains the least amount of protein . Since cow's milk is so different , many pediatricians recommend that human infants be fed either human breast milk or formulae ...
... Humans have one of the slowest infant growth rates , and human milk contains the least amount of protein . Since cow's milk is so different , many pediatricians recommend that human infants be fed either human breast milk or formulae ...
Страница 356
... Human Biomass Pyramids . Since approximately 90 % of the energy is lost as energy passes from one trophic level to ... human population in North America increased at a rapid rate . The top of the pyr- amid became larger . The food chain ...
... Human Biomass Pyramids . Since approximately 90 % of the energy is lost as energy passes from one trophic level to ... human population in North America increased at a rapid rate . The top of the pyr- amid became larger . The food chain ...
Страница 371
... human activity may take hundreds of years to repair . Some species are much more resistant to human activity than others . Rabbits , starlings , skunks , many kinds of insects , and many plants are able to maintain high populations ...
... human activity may take hundreds of years to repair . Some species are much more resistant to human activity than others . Rabbits , starlings , skunks , many kinds of insects , and many plants are able to maintain high populations ...
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What Is Biology? | 2 |
What Is Biology? | 11 |
1 Edward Jenner and | 15 |
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activities allele amino acids amount animals atoms attached bacteria behavior biological body bonds called carbohydrates carbon dioxide cause cell membrane cellular cellular respiration centrioles changes chapter characteristics chemical chromatids complex contain cycle cytoplasm diet diploid disease ecosystem EeDd electrons energy environment enzyme eukaryotic example factors female fertilization Figure free earlobes function gametes gene frequencies gene pool genetic genotype glands glucose growth haploid homologous chromosomes hormones human hydrogen increase individual insects intestine involved ions kcalories kinds living things male materials meiosis metabolic mitosis mRNA muscle mutation neuron nitrogen normal nucleotides nucleus nutrients occur offspring oocyte organelles organic molecules ovary oxygen pair parasites PGAL phosphate photosynthesis plants population produce prokaryotic protein protons pyruvic acid reactions released reproduction respiration result ribosomes sexual species sperm stage structure substrate sugar surface synthesis trophic level vitamins X chromosome