Which of the following describes how the winter season affects organisms in the tundra biome?
a. the cold temperatures kill most of the plants.
b. plants increase the size of their leaves to absorb sunlight.
c. the predator to prey ratio increases.
d. animals not adapted to cold migrate to warmer regions.

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.