How do all organisms begin? as one single cell
It depends on whether the adult organism is single-celled or multi-celled.
as a collection of cells
as a group of daughter cells

Which of the following is a testable hypotheses?

Which type of respiration takes place when there is no oxygen present? a. anaerobic b. mitochondrial c. cellular d. aerobica. anaerobic

Which one is an advantage of external fertilization a. the offspring are genetically identical to the parents b. more eggs can be fertilzed at one time c. more sperm can be released at one time d. more protection is available for developing plz