...As a result of a symbiosis between prokaryotic and eukaryotic cells. The theory is that the mitochondria and the chloroplasts were prokaryotic cells inside the eukaryotic cells which is called endosymbiosis. There is evidence for this because plastids and mitochondria have double membranes like prokaryotic cells and they also have their own genetic material.
Hope that helps and is in decent english as I studied it in spanish
The answer is A. photoperiodism.
Photoperiodism is an organism reaction to the lengths of days and nights. Some plants require longer days, and some require shorter days. By changing the lengths of days and nights, commercial plant growers are able to increase plants productivity.
Tropism is plant growth in a response to a stimulus.
As it name suggests, <em>photo</em>tropism is plant growth in a response to light.
<em>Gravi</em>tropism is plant growth in a response to gravity.
Thigmotropism is plant growth in a response to contact
Your body gets the things it needs to survive by your brain telling you that its either hungry or thirsty so you can stay energized your body also tells it self when to go to sleep which is something we all need
The Molar mass of 
is 194g
<u>Explanation:</u>
Molecular mass of Fe = 56g
Molecular mass of C = 12g
Molecular mass of H = 1g
Molecular mass of O = 16g
Therefore, Molecular mass of
= 
= 56 + 36 + 6 + 96g
= 194g
So the Molar mass of is 194g.
A negative feedback mechanism tries to negate changes so as to restore the variations that occurs in the value of a parameter or system.
<h3>What is Negative feedback?</h3>
This is known to be a method that tend to reverses any kind of movement or deviation from the set point and it then keeps the body parameters to its normal range.
Note that A negative feedback mechanism tries to negate changes so as to restore the variations that occurs in the value of a parameter or system.
Learn more about Negative feedback from
brainly.com/question/10473696
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