Me : ):
steady state theorists support the perfect cosmological principle, which suggests the universe looks the same from all directions, but over time.

The correct answer or fill in would be- but Change and evolve over time.

Explanation:

The perfect cosmological principle is a extended version of the cosmological principle. The perfect cosmological principle says that the universe is look same from all directions but can be change and evolve with time.

Steady state theory supports this theory as it also says that universe is expanding but also maintain its density even though it continuously creates stars and galaxies but still look same.

Thus, the correct answer is - but Change and evolve over time.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

sorry, is there a picture? i do not see any arrows.

wut? unius0123 wut?