Explain clearly why we need rain ? what are consequences of rainfall in atmosphere in world ? what are the factors for the rain cause in forests and how we need it ? describe importance of rain in geographical locations in entire wold? what is called as rain shadow effect in climate ? Which particles does form rain in air ? what is the speed of the droplets of rain in air ? how is acid rain created in nature who it is travel through clouds ? what happens when acid rain falls in buildings ?

Explain clearly why we need rain ? what are consequences of rainfall in atmosphere in world ? what are the factors for the rain cause in forests and how we need it ? describe importance of rain in geographical locations in entire wold? what is called as rain shadow effect in climate ? Which particles does form rain in air ? what is the speed of the droplets of rain in air ? how is acid rain created in nature who it is travel through clouds ? what happens when acid rain falls in buildings ?

In biological terms, a species is defined as a group of organisms that are able to interbreed to produce fertile and viable offspring under natural conditions. This description of a species can further be characterized as reproductive isolation, where physical and sometimes behavioral traits of an organism will only allow them to reproduce with an organism that has the same traits. Using the aforementioned definition of a species, different breeds of dogs are able to produce fertile and viable offspring because they are all the same species, but dogs and cats are unable to interbreed because they are two different species.

Population

Now, extend the definition of a species to a group of the same species living in the same geographic area. This would represent a population. What would happen if the species within this population were suddenly split into two groups by an earthquake, creating a physical barrier such as a canyon? If a population is divided indefinitely by a barrier, members of the divided population will not have the opportunity to breed with each other.

Impacts

Over many years, the abiotic (nonliving) and biotic (living) conditions on either side of the physical barrier will vary from one another. As a result, natural selection will cause different selective and adaptive pressures to occur between the two divided populations, and they will evolve differently. Over time, this will result in speciation, which is the creation of two new species. This occurs because of reproductive isolation.

Part 2:

Timeline

Use the timeline to view the impact of speciation.

Your observations from the animation should be used to complete the lab worksheet.

(Audesirk, Audesirk, & Byers, 2008)

Reference:

Audesirk, T., Audesirk, G., & Byers, B. E. (2008). Biology: Life on earth with physiology. Upper Saddle River, NJ: Prentice Hall.