Which of the following is NOT a reason that sphere interactions are important?

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.

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.