The discovery of a very early form of helium supports the big bang theory because

helium was one of the first elements to be formed after the big bang
helium is abundant in about 75% of the universe
helium was one of the last elements formed after the big bang
helium was part of the "fireball" that exploded

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

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.

Where does oogenesis take place ? seminiferous tubules fallopian tubes ovaries uterus