Answer:
Bottleneck effect
Explanation:
The bottleneck effect is when a natural disaster happens, like an earthquake, hurricane, etc. and the population narrows tremendously. This only allows the surviving traits to be passed on and continue with evolution.
The answer is; A
In pteridophytes, the sporophytes (of the haploid stage) produce spores. The diploid stage in pteridophytes may occur when tow spores fuse and develop into a prothallus (diploid stage of the pteridophytes).
Fungo too produces spores by the sporangiophores (haploid stage). Occasionally, two horizontal hyphae between two species of fungi, may fuse at the tips and form a zygote through karyogamy and plasmogamy.
Answer:
The correct answer would be a two word system for naming organisms by using the genus and species.
Binomial nomenclature is a formal system of giving a scientific name to an organism.
It was given by Carolus Linnaeus.
According to this system, scientific name of an organism is made up of two components- generic name and specific epithet.
These names are generally Latin in origin and are written in italics.
The first word of the scientific name represents the genus name and second word represents the specific epithet.
The first letter of the genus name is always written in capitals while rest is written in small letters.
The genus and specific epithet are either underlined separately when they are written or they are italicized when printed. It indicates their Latin origin.
For example, the scientific name of human is <em>Homo sapiens. </em>
The method that tells you which layer is the oldest is using relative age, with this you can analyze the rock and know that they deepest one is the oldest. This answer does not have the actual method name due to the fact i cannot remember.