The chandra x-ray observatory is used to study 1. the solar system’s outer planets 2. black holes 3. exploding stars 4. the sun

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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explanation:

feral cats are estimated to eat tens of millions of native animals each night in australia