Answer:
It provides a defined order to the succession of organisms.
Explanation: Relative dating of rocks involves the relative or comparative determination of age with reference to past events. There are several principles involved in carrying out relative dating. Some of these principles are:1. Principle of inclusion2. Principle of inclusion 3. Principle of fossil and fauna succession The Principle of fossil and fauna succession postulates that fossil and fauna succeeds one another in a definite pattern. It is this defined order that we use to achieve relative dating of rocks. Plant and animal remains constitutes the fauna and fossils used in dating the rocks. When we find a particular fossil in a rock, we can place that rock in its appropriate geological time. We can even go further by correlating rock types using their fossil contents.
<u>Answer</u>: The answers are matched as follows:
African forests have been hunted to near extinction levels to obtain ivory-------------->human exploitation
The eruption of mount Saint Helens destroyed some populations of conifers------> natural disasters
An infection with a fungus reduced the population of North American Elm trees ----> disease
Increasing global temperatures have altered migration patterns of humpback whales ------>climate change
<u>Explanation</u>:
- <em>Human</em> <em>exploitation</em> is the unethical or selfish use of resources to satisfy their own personal needs or for any profitable activity which harms the resources in such a way that they get limited. Humans have been hunting elephants to obtain ivory for many purposes such as making jewellery etc. and earning profits from it. Due to such extensive hunting they have driven the elephants to a level of extinction and thus, this is a form of human exploitation.
- Mount Saint Helens is a volcano and its eruption which harms the population of the trees in the area is a form of natural disaster since volcanic eruption is a <em>natural</em> <em>phenomena</em>.
- Fungal infection is a <em>disease</em> which is cause by the microorganisms which harms the population of the Elm trees.
- Increase of global temperature is a type of climate <em>change</em> and thus, this effect of alteration of migration pattern is caused by climate change.
A species that is not native to an ecosystem but is introduced artificially. Usually cause harm to the native species in the area.
Unregulated cell division can result in cancer
The answer is cell membrane
