Answer:
Pollen grains are produced by meiosis of microspore mother cells that are located along the inner edge of the anther sacs (microsporangia). ... The tube cell (also referred to as the tube nucleus) develops into the pollen tube. The germ cell divides by mitosis to produce two sperm cells.
A sperm or egg cells. It’s the only part that is passed on to the next generation.
Answer:
A, C, D are responsible. B is irresponsible
Explanation:
Answer:
Aerobics is a type of physical activity that combines rhythmic aerobic exercise with stretching and strength training exercises to improve overall fitness.
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Answer: A) dinosaurs
Explanation:
Global shift from a warmer tropical climate to a colder climate may have been the cause of the dinosaur extinction