If one HSC divides using the second type of cell division and then the resulting HSC divides again but this time using the first type of cell division, how many
HSCs would you have and how many mature blood cells would you have?

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?

What organs comprise the respiratory system of a bird

Which of the following is not a type of epithelial cell