Answer:
Phylogenetics
Explanation:
An evolutionary tree can also be called a phylogenetic tree, or a just a phylogeny, and phylogenetics is the study of determining evolutionary relationships, or patterns of descent of organisms.
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<span>All planets revolve around the sun. - Incorrect. There are many planets that revolve around other stars.
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To the heart: pulmonary vein
Away from heart: pulmonary artery
Rigid skeletons are formed from materials including chitin (in arthropods), calcium compounds such as calcium carbonate (in stony corals and mollusks) and silicate (for diatoms and radiolarians).
Biotic:
-predator
-competition(relationsip)
abiotic:
-sunlight
-water
