Answer:
Microtubules are filamentous intracellular structures that are responsible for various kinds of movements in all eukaryotic cells. Microtubules are involved in nucleic and cell division, organization of intracellular structure, and intracellular transport, as well as ciliary and flagellar motility
Centrioles are cylindrical structures that are made up of protein tubes called microtubules. Specifically, nine groups of three microtubules, known as triplet microtubules, are linked together to make the walls of the cylinder.
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Answer:
246
Explanation:
Increased amount / current population = 972
Amount released = 108
time(t) = 2years 
Using the exponential growth function :
f(t) = A*g^t
Where g = growth rate 
To obtain the growth rate = g
972 = 108 * g^2
g^2 = 972 / 108
g^2 = 9
g = 3
To determine population after 9 months :
9 months to years = (9/12) = 0.75
t = 0.75
f(0.75) = 108*(3^0.75)
f(0.75) = 108 * 2.2795070
f(0.75) = 246.18676
= 246
 
        
             
        
        
        
The excretory system allows animals to remove metabolic waste their bodies. Many of these substances are potentially toxic. in Mammals nitrogenous toxins like urea are expelled through liquid urine while in reptiles and birds the nitrogenous compounds are expelled as a solid. This allows birds and reptiles to use less water in the processes of metabolism.
        
             
        
        
        
He is most likely to suffer some loss of visual perception.
        
             
        
        
        
Answer:
few predatory lacewings exist in the trees now because they were killed by the spray.
Explanation:
The spray that farmers used, as noted, also killed the populations of a predatory lacewing.
Due to this, few predatory lacewing remained that could not fully deal with the scale population.
This in turn led to the multiplication of scale now that their predators had been done away with.