Which phrase describes the study of ecology? a. transfer of energy in the physical world b. growth and development of organisms c. relationships between living things and their environment d. comparisons between biotic and abiotic environments

Ecology is a branch of biology that focuses on the relationships formed between other organisms and their surroundings. So, your answer would be C.

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many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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