What is similar between the organ of Mango , Sugar Cane , and Onion.​

The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

Ineed some everybody. the production of cells during mitosis into specialized function is called: recombination or differentiation