What term describes physical weathering due to collisions between sand and sediment carried in moving water and the rock surface over which the water flows.

-erosion
-abrasion
-dissolving
-wedging

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

Si el equipo no fuera bueno no con el entrenador.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes