Answer:
Erosion, compaction, nutrient imbalance, pollution, acidification, water logging, loss of soil biodiversity and increasing salinity have been affecting soil across the globe, reducing its ability to support plant life and so grow crops.
Trilobites create one of the most primitive recognized
groups of arthropods. These are a group of fossilized extinct marine arachnomorph
arthropods. Trilobites seem to have been wholly marine organisms, since the
petrified remains of trilobites are always found in rocks containing fossils of
other salt-water animals. So therefore, the answer is the hill you are hiking
on is at one time, were under water. Since Trilobites are found under water.
Answer:
Superposition --- C. the oldest is on the bottom, the youngest on top.
Cross-cutting relationships --- B. faults, fractures are younger than the rocks they cut through.
Unconformities -- D. missing time
Original horizontality -- A . sedimentary layers/lava flows are deposited in flat layers.
Explanation:
- The superimposition is the layering of the older beds of the sedimentary rocks and has a series of a layer of the lava flows with the oldest layer at the bottom and the youngest at the top.
- The cross-cutting is the principle of geology that states the which feature cuts the another or the younger of them and is a relative dating technique.
- An unconformity is a buried erosional or a non-depositional surface that is separating the two rocks masses or the stratas and thus indicates that the sediment deposits were not continuous.
- The principle of the horizontality states that the layer of the sediments is originally deposited horizontally under the action of gravity a thus this analysis helps in the folded and tilted strata.
