Chlorophyll is the primary pigment in plant chloroplasts. it absorbs all wavelengths of light, except

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

Stem cells found adult tissue such as in bone marrow brain muscle skin and liver are only capable of what

Math focus 4. calculate a map has index contours at 250 m, 500 m, and 750 m. what is the contour interval?