Which of the following best describes the main idea of the endosymbiotic theory? modern day mitochondria evolved from simple prokaryotic cells taken up by larger prokaryotes. large prokaryotes ingested smaller eukaryotes that became modern-day chloroplasts. eukaryotic cells evolved from primitive mitochondria that engulfed ancient prokaryotes. ancient photosynthetic prokaryotic organisms evolved into modern ribosomes.

Which of the following is a way that minerals are used? a. industry construction technology d. all of the above

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.

Drag the tiles to the boxes to form correct pairs. match the causes with their effects cause: tectonic plates at transform boundaries experience friction. cause: tectonic plates at transform boundaries experience friction. cause: earth is covered by a crust that runs miles deep.