Type the correct answer in the box. Spell the word correctly. Excavation is a hazardous operation. In the United States, which organization regulates excavation?
In the United States regulates site excavation.

ARPA.

Explanation:

The Archaeological Resources Protection Act of 1979, also referred to as ARPA, is a Federal law passed in 1979 and amended in 1988. It governs the excavation of archaeological sites on Federal and Indian lands in the United States, and the removal and disposition of archaeological collections from those sites.

The Archaeological Resources Protrctio6Act of 1979

Explanation:

Some refer to it as ARPA

we have to select the terms that are associated with communication between neurons.

synapse is the gap between two neurons that is there to transmit the signal.

from one neuron to other neuron the signals transmit through neurotransmitter which is a chemical and finally after reaching it becomes the electrical signal

therefore, option 4th is correct that is: synapse,electrical signals and neurotransmitter.