Answer:
Answer:
Here is the order of biological organization from lowest to highest level:
Cell — egg cell, sperm cell
Tissue — connective tissue, epithelial tissue
Organ — heart, brain
Organ system — circulatory system and Nervous System
Organism — human, animals
Population — 30 students in a class, 30 dogs in a dog center
Ecosystem — aquatic ecosystem, rainforest
Biosphere — Earth
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