Create an imaginary species and identify a single trait with two variations (For example, a bird species with either small or large beaks). Describe the species' environmental conditions and present a reason why one variation of the trait has greater fitness over the other variation.

Aboy with an extra x chromosome probably has which of the following syndromes?

Explain how organisms could be harmed by high levels of salt from roadways?

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.