Because an organism needs even more cells to help it function better and change as it grows (like metamorphosis and yes, puberty :p) and if the same amount of cells stay then the organism's cells will be functioning and working harder.....so cells divide so many different ones can continue to work on different parts of the organism as it grows and changes. Plus it'd be weird if we only had like 1 thousand cells in our body from mothers' pregnancy the size of hi-polymer erasers (the big ones)..........
For the answer to the question above, there is no such thing as a non-living organism. Because organisms are only a term for living things.
1. Cellular structure: all living organisms generally have a cellular structure i.e., they are made up of one or more cells.
<span>The protoplasm is the physical basis of life. </span>
<span>There is no such fundamental and structural unit called cell in non-living things. </span>
<span>2. metabolism : The various life processes taking place within the body of an organism is collectively termed metabolism. The metabolic processes can occur only in living organisms and not in nonliving things. </span>
<span>3. growth, repair and death : Growth consists of the living organism absorbing materials entirely different from those that make up its body and convert them into body building substances. Growth in non-living substances such as crystal is at the cost of material similar to that of which it consists. Same substance is added without conversion. </span>
<span>The growth is permanent, irreversible process in living organisms but can be reversed in non-living things. </span>
<span>Growth is different in different parts of the body of an organism. Growth is uniform throughout in the non-living things. </span>
<span>Respiration, nutrition,excretion, movement,irritability, reproduction, life span, death, evolvability are other properties of a living organism.</span>
Answer:Option B
The memory response is due to long lived cells that can respond rapidly to second exposure.
Explanation:
Immunological memory is the ability of the immune system to quickly identify and remember an antigen from a pathogen that the body has encountered before and initiate a faster immunological response upon a reencounter with the particular antigen. This dependents on colonial selection.. The memory cells have a long life span and can remain in the body for a long time. When it encounter the antigen its previously encountered for the second time, they mobilize quickly and become plasma cells, these secrets a lot of antibodies and cause a stronger reaction to defend against such antigen in a short time.
Habitat fragmentation is usually a reason for species becoming endangered or threatened. The prevalence of viable habitat is critical to the survival of any species, and in various circumstances, the fragmentation of any remaining habitat can result in difficult choices for conservation biologists.
The fragmentation can result in the extinction of species due to the following factors:
1. Species can dwindle to extinction due to catastrophes.
2. Species can dwindle to extinction due to inbreeding.
3. Species can dwindle to extinction due to loss of genetic variation.
Answer:
Ia tidak mempunyai badan fizikal.
Penjelasan:
Jisim udara tidak diukur oleh keseimbangan tuas atau keseimbangan berat yang lain kerana mustahil untuk mengukur jisim udara. Hanya dua sifat udara yang dapat diukur seperti kadar aliran dan tekanan. Imbangan tuas mengukur berat bahan-bahan yang mempunyai badan fizikal sehingga sebab itu jisim udara tidak dapat diukur kerana tidak mempunyai badan fizikal. Udara mempunyai jisim tetapi tidak mempunyai badan fizikal sehingga mustahil untuk mengukur beratnya.
