The front limbs of whales are flippers that help them swim. The fins of fish serve a similar purpose, but fins are not limbs, and their sīructure is different from that of
flippers. Which statement best describes how whale flippers and fish fins are
related?
Select one:
They are homologous structures.
They are analogous structures.
They are both specialized limbs.
They are both vestigial structures.

protist eukaryotes that are not plants, animals, or fungi ("misfits")

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

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.