The right answer is: An organism's characteristics are determined by their genome which is inherited from one generation to the next.
We can give some characteristics of a living organism:
* The ability to stay alive by drawing energy and necessary components into the environment. This ability is based on the metabolism that includes various functions, such as nutrition, respiration, photosynthesis ...;
* The ability to develop according to a certain organization (growth, morphology, cell division, development);
* The ability to reproduce and give birth to other living organisms (vegetative or sexual reproduction);
* The need for a favorable environment to survive (temperature, pressure, oxygen, water ...).
Living matter is based on organic chemistry based on carbon.
<span>Ecosystems are named according to the vegetative inhabitants of the ecosystem which means that the answer is B. by the plants that inhabit the ecosystem. The plants themselves however depend on the climate that is found in the place where they are found, which means that they wouldn't be able to thrive and spread in any other ecosystems.</span>
Here is what I found, its quite interesting, I hope it helps..
https://www.fbi.gov/services/laboratory/biometric-analysis/codis/codis-and-ndis-fact-sheet
Answer:
In humans, genetic variations are caused because humans reproduce by a sexual life cycle which is termed as meiosis. In such a life cycle, the offspring receives half the chromosomes from the mother and half from the father. Crossing over and random assortment of chromosomes are two phenomenons which occur during meiosis. Due to these two phenomenons, genetic variations are caused.
During crossing over, the exchange of DNA segments between the homologous chromosomes takes place which brings about the genetic variations.
