20 ! more than one

why are invasive species considered a threat to native wildlife?

they can breed and spread quickly.
they consume native species’ food supply.
they evolve, and native species don’t.
they all have higher genetic diversity than native species.
they don’t need resources from the environment as native species do.

You see a white marker with an orange circle and black lettering. what does this marker tell you

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.

Which atmospheric later is where earths northern and southern lights occur