Sympatric speciation is the evolution of a new species from a surviving ancestral species while both continue to inhabit the same geographic region. In evolutionary biology and biogeography, sympatric and sympatry are terms referring to organisms whose ranges overlap so that they occur together at least in some places.
Answer:
lichen
Explanation:
Common examples of pioneer species include bacteria, lichen, mosses, and fungi.
Answer:
Dr Poole worked in Gorongosa park and he made the observation of most females being tuskless as a result of the selective pressure caused by poaching.
Although male elephants are also affected by this in which some don’t also have tusks the percentage is low when compared to the female elephants.
Answer: Contour ploughing
Explanation: The soil conservation can be defined as the techniques that are opted to conserve soil. It is necessary for the soil to be conserved as it is necessary for the growth of plants.
There are various methods that can be used to conserve soil. Contour ploughing is one of them. In this method furrows are made that move left to right to maintain a constant altitude.
This technique reduces the runoff which helps in the soil conservation.
