Section 200.22 Program standards for behavioral interventions. Behavioral interventions for students with disabilities shall be provided in accordance with this section and those other applicable provisions of this Part and/or Part 201 that are not inconsistent with this section. (a) Assessment of student behaviors.
The age of Earth was calculated to be about 24-40 million years based on the laws of thermodynamics. Unknown at the time was that the Earth has an internal heat source (radioactive decay) In 1899, John Joly (Irish) calculated the rate of delivery of salt to the ocean.
Thus the date of an event can be determined using relative scales such as a Lunar calendar or a Solar calendar (with the year zero defined based on a historical event), or the date of an event can be determined using an absoute scale; a calendar based on the Solar year with the time 0 being the creation of the universe.