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bio biology biologypro cell division deforestation ecology example excretion eye genetics heredity homeostasis human humans kidney lesson lesson 1 molecular nutrients overfishing plants pollution reproduction structure transport water more…

abiotic absorption accommodation action active transport adrenaline aerobic air alimentary canal alleles anaerobic anatomy animal cell artery assimiliation balanced diet bio biology biology photosynthesis biologyn biologypro biomass biotic blood blood vessels capacity capillary carbohydrates cell cell cycle cell division chamber changes characteristics comparison complete conservation constant continuous cycle deforestation diffusion digestion discontinuous division dna dominance ecology endocrine energy engineering enzyme enzymes equilibrium example exchange excretion experiments eye factor factors family planning fats fertilisation fertilisation fertilization fertilization fibre focusing function gaseous gene genetic genetics gland glands heart heredity homeostasis hormones human humans hypertonic hypotonic incomplete insulin introduction isotonic kidney leaf leaves lesosn 4 lesson lesson 1 light lung lungs meiosis mendel menstrual mineral salts mitosis molecular mr tan multiple mutation mutations nervous nervous system numbers nutrients nutrition o level osmosis overfishing pea phloem plant plant cell plants pollination pollution pregnancy properties proteins pupil pupil reflex pyramid reflex regulation reproduction respiration sex sex determination solutions specialised cells spectrum std structrue structure system temperature transcription translation transport types valve variation vein vitamins water xylem …less