The hollow collection of undifferentiated cells that occurs after fertilization and initial mitosis is called a A. morula. B. blastocyst. C. fetus. D. placenta.

Which organelles are involved in energy conversion

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent

Will mark brainliest. (20 points) many have pigments structures known as eyespots that detect direction of light. a. b. archaebacteria c. protists d. none of the above