Scientists call an organism that has two different alleles for a trait or

Which of the following happened during the precambrian era? the first prokaryotic cells the first eukaryotic cells development of photosynthesis all of the above

Label all the places where dna is located in the plant cell and in the animal cell. dna

Which force diagram accurately represents a satellite in orbit around earth? image for option 1 image for option 2 image for option 3 image for option 4