Answer: Option D
Explanation:
The practice which has been prevailing from a long time is considered as culture.Farming is also a type of culture which is being practiced from a longer period of time in the society.
The farming is also a type of culture which was invented somewhere and started spreading from there to other places.
This practice helped mankind in providing food and resources to the people of nation.
Answer:
Due to absence of predators.
Explanation:
The populations of invasive species grow rapidly because of the absence of predators that can control its population as as result, it disrupt the whole ecosystem. Change of climatic conditions of the area where they live causes them to migrate from its original place to a new region where the invasive species have no predators to control its population but mostly humans are responsible for the introduction of invasive species. In most cases, the introduction of invasive species happen due to human activities.
They are only present in plant cells an they are green pigment and where photosynthesis take place
<span>Protozoa mostly divide by the process of binary fission. This is a asexual mode of reproduction. One protozoan cell divides into similar daughter cells. Thus, after several rouds of divison, multiple cells are formed. Some species are also known to divide by multiple asexual divisions.</span>
