From his observations of the animal species on the galapagos islands, darwin concluded that
plants and animals
cannot change
adapt to their environment over time
change only in closed ecosystems
can change over one generation

The correct answer is plants and animals adapt to their environment over time.

Explanation:

The studies made by Charles Darwin in the Galapagos Islands, resulted in unique creatures but with similar characteristics to each other, which adapted perfectly to the environment they inhabited.

Which led him to reflect on their origin.

This trip that lasted 5 weeks in the year 1835 gave rise to his book The Origin of Species, and the behavior he observed about the species he saw there was what inspired him to carry out the Theory of Evolution.

the only other powers were germany russia and uk and they were too busy fighting each other wearing each other down   that the us was becoming strong and they were becoming weaker

no sé si entiendes español pero te daría la respuesta si lo supiera, pero lo siento mucho