Answer:
Prokaryotic cells are larger than eukaryotic cells. Eukaryotic cells do not have nuclei, and prokaryotic cells do have nuclei. Prokaryotic cells lack membrane-bound organelles, and eukaryotic cells contain membrane-bound organelles.
 
        
             
        
        
        
1.Artificial
c.blood and cells
c.presence or absence of a particular plasma
        
             
        
        
        
The endocrine system is a collection of glands that regulate your metabolism, growth, sleep, mood and other things around your body.
        
                    
             
        
        
        
Answer:
d. xylem and phloem
Explanation: plants possess vascular bundles.these are bundles which includes xylem and phloem tissues and transport useful substances to various plant cells.
New Xylem and phloem are formed from the vascular cambium which divides into new cells .
Xylem and phloem are thin and slender with pipe-like structure.
The xylem transports water and dissolved nutrients to the cells where they are needed.
The phloem transports the product of photosynthesis (sugar) to parts what they are used up or stored .
Xylem cells are dead and consists in vessels,trachieds and xylem parenchyma.
Phloem cells are dead and consists in sieves cell, companion cells, phloem parenchyma and phloem fibres.
 
        
             
        
        
        
A thicker atmosphere, which would scatter more sunlight, make the sky look bluer and lower the air temperature.