Explanation:
The law of superposition of strata is one of the principles used in assigning rock strata according to their relative ages.
The law states that "in an undisturbed sequence of rock strata, the oldest rock layer is at the bottom and the youngest on top".
- In a sequence of sedimentary rocks that has not been disturbed, the oldest rock layer is at the bottom.
- This is the layer that was first deposited in the basin.
- Subsequent layers were deposited in the basin.
- These layers are younger than the one at the base that was first deposited.
- First deposited, at the bottom is the oldest layer.
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Answer:
Throughout the reflection, make sure you have a copy of the Student Guide and your data tables. Complete the paragraph by using the drop-down menus.
In this lab, you determined the relative ages of rock layers using the principles of relative dating. The
✔ law of superposition
says that a rock layer found closer to Earth’s surface is
✔ younger than
a rock layer that is deeper in Earth’s surface. The
✔ principle of cross-cutting relationships
states that intrusions are
✔ younger than
the rock layer they cut across. You also determined the absolute ages of rock layers using a
✔ mass spectrometer
. The data you gathered helped you identify an unknown fossil.
Explanation:
the checked ones are the right answers
In
general, hormones that bind to plasma membrane receptors cannot pass through
cell membranes.
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Membrane
receptors or cell surface receptors are receptors that are located in the
membranes of cells and usually are integral membrane proteins. The
extracellular molecules like hormones, neurotransmitters, cytokines, growth
factors are ligands that induce changes (signal cascade) within the cell.</span>
The display communicates that the males are from their own species and that they may not be from the same species group as the females.