Ot would take about 3 to 6 months
Archaeologists studying an archaeological site use seriation to :
<u>determine the relative age of each layer of objects</u>
<u></u>
Explanation:
- The goal of archaeology is to understand how and why human behavior has changed over time.
- Archaeologists search for patterns in the evolution of significant cultural events such as the development of farming, the emergence of cities, or the collapse of major civilizations for clues of why these events occurred.
- Archaeologists use a statistical sampling method to select which squares or units they will excavate.
- They will collect surface artifacts, then remove any ground vegetation. Archaeologists screen all soil removed from a unit to recover small artifacts and ecofacts.
- Artifacts include tools, clothing, and decorations.
- Non-portable remains, such as pyramids or post-holes, are called features. Archaeologists use artifacts and features to learn how people lived in specific times and places.
- Archaeologists might study the million-year-old fossils of our earliest human ancestors in Africa.
Answer:
4,3,1,5,2
4. Vesicles full of acetylcholine are stored at the axon terminal.
3. Action potential arrives at the neuromuscular junction.
1. Action potential is propagated in the sarcolemma.
5. Acetylcholine is released into the synaptic cleft.
2. Acetylcholine binds to ligand gated sodium channels.
Explanation:
Nerve impulse is generated from somatic motor neurons and reaches neuromuscular junction. The nerve impulse specifically reaches a region named 'synaptic end bulbs' at axon terminal. These synaptic end bulbs are in turn connected to the motor end plate region of a sarcolemma.
As soon as the nerve impulse reaches neuromuscular junction, it triggers the opening of voltage gated ion channels which in turn facilitate the influx of Ca²⁺ from the extracellular fluid to the inside of neuron where synaptic vesicles containing neurotransmitter acetylcholine are already stored.
The Ca²⁺ causes the exocytosis of synaptic vesicles which fuse with the plasma membrane of motor neuron as a result of which acetylcholine is released in the synaptic cleft.
The acetylcholine further binds with the acetylcholine receptor which is present at the motor end plate of a skeletal muscle fibre. These receptors are ligand gated ion channels.
Binding of acetylcholine with its receptor causes the ion channels to open and cations like Na⁺ enter the muscle fibre so as to make the electric potential inside the muscle positive.
Answer:
These “higher level” brain areas are most likely related to three different cognitive processes inherently part of synaesthesia: the sensory processes (with the sensory areas), the attentional processes especially controlling the binding process (within the parietal lobe), and the cognitive processes.
Answer: It can detect chemical cues produced by the predator Notonecta glauca.
Explanation:
