What is an example of a muscle of facial expression?
a. orbicularis oris
b. laris oculi
c. buccinators
d. all of the above

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

Explain why ecosystem diversity results in species diversity in a healthy biosphere

Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?