Answer:
I'm pretty sure its the 1st one! 
Explanation:
Dna are used to make chromosones, which are then uesd to make genes!
Hoped this helped!
 
        
             
        
        
        
Answer:
The artery has a thick membrane to prevent nutrients and oxygen in the blood from being lost while transported.
The blood thick membrane to help reduce the pressure the blood following in it is coming with.
 
        
             
        
        
        
Plants are very crucial for maintenance of balance of ecosytem as part of the equilibrium and the primary basis for the ecosystem as the producers.
Explanation:
The ecosystem consists of plants with animals and the environment surrounding it. The balance of all three elements is essential for the co existence of the ecosystem. devoid of any or excess of either factor will lead to destruction.
The imbalance so caused will lead to over production or over consumption of the strata in the ecosystem. Plants holds the producer level of the ecosystem which forms the basis to all, if dis-balanced all the factors relying on it will decline eventually and the world will fall.
 
        
             
        
        
        
Answer:
bacteria fungi and chemicals
Explanation:
 
        
             
        
        
        
The FedEx of the cell are the vesicles.
Vesicles are the structures in which many cell materials are packed and transported. Vesicles are cellular organelles that are composed of a lipid bilayer and they function as cellular envelopes to transport cell materials from one place to another inside the cell.
An example of one material is protein. After a particular protein has been synthesized in the ribosomes of the cell, it is packaged in a vesicle called a transport vesicle. The vesicle carries this package to the Golgi apparatus for final tweaking after which it is again repacked in a new vesicle which transports it to its required destination in the cell.