What have been the four hottest years on record, globally? And how much have global average temperatures climbed since 1850?

What factors contribute to the effect an environmental toxin has on the human body?

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.

What do well call it when two or more genes determine an organisms trait? a. polygenic b. controlled by one gene c. mutated