1. precommand levelcontrols the outputs of the cortex and regulates motor activity.
2. segmental levelcentral pattern generators.
3. projection levelintermediate relay for incoming and outgoing neurons.
4. the cerebellum and basal nuclei.
5. includes cortical and brain stem motor areas.
6. the neural machinery of the spinal cord, including spinal cord circuits.

Which of the following is true of photosynthesis? a)carbon dioxide is a reactant b)water is a product c)most reactions within this process are exothermic d)oxygen is a reactant

Which process is involved in growing crops? irrigation transportation recreation condensation

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