The statement force equals mass times acceleration is Newton second law of motion why is this a law and not a theory?

Match the reproductive structures based on their function and the system to which they belong. egg ovary sperm vas deferens vagina fallopian tube testis urethra

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

Which tool could you see a plant cell? a. a filter b. a microscope c. a microwave d. an electromagnet