The weathering process occurs when rocks are exposed to the hydrosphere (water) and atmosphere (air).
A virus is an infectious particle that reproduces by "commandeering" a host cell and using its machinery to make more viruses.
Role of decomposer in fooe chain/food web
Decomposers are organisms which convert complex organic molecules into their simple forms.
Example
bacteria, fungi etc.
Explanation
food chain stary from autotrophs and end at decomposers. these organisms are present in soil, rely on dead bodies of plants and animals for their nutrient requirements. These organisms possess strong enzymatic system, which scavenge comples molecules from dead bodies during respiration and convert them into simple nutrients which return back to atmosphere.
Answer:
Faunal succession
cross-cutting relationships
superposition
Explanation:
Relative dating helps determine geological events by observing rocks.
Faunal succession is a method that uses sedimentary rocks for dating by observing the plant and animal fossils in them.
Cross-cutting relationships show that the layer that cuts across other layers are younger than the layers that they cut through.
Superposition states that younger layers are formed on top of the older layers. So if you are looking at the layers beneath the Earth, the ones that are in the bottom are older and as time pass younger layers form on top of them.
