<h2>Answer:</h2>
The correct arrangement of steps that occur in producing neuron cells.
The steps are from 1 to 4 according to arrangement.
- Genes that lead to the production of undifferentiated precursor neurons are activated.
- Stem cell arise from the inner mass of cells.
- Signalling factors trigger differentiation in stem cells.
- Signalling factors causes precursor neurons to produce neurons.
Answer:
A)Ocean floor evidence of sea floor spreading.
Explanation:
evidence pointing to the steps or process of seafloor spreading and effective plate motion This theory was accepted by many scientist because it depended on hard evidence and could describe most of the modern geological structures such as ocean basins,
What is the tectonic theory?
The theory of plate tectonics plates says that Earth's surface is made of rigid slabs of rock, or plates, that move to each other.
What is a tectonic plate?
They are huge slabs of rock that cover the earths mantle When a earthquake occurs that's because the tectonic plate is breaking that makes the ground shake During the earthquake and afterward, the plates keep on shaking until they are stuck again!
<em>Hope this helps!</em>
<em> -Tobie the dog <3</em>
Answer:People look at the fossil record and think the early history of many animals is filled with giants, but not for whales. It's only in recent geological times that whales have achieved really large sizes
