Beginning with a nebulae, which is the next stage in the life cycle of a star? Red giant
White dwarf
Protostar
Supernova

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

Modern whales developed their traits through natural selection what occurs during the process of natural selection

What is turgor pressure, what causes it, and what does it do for a plant?