No. Crocodilians are reptiles. and they are vertebrates, meaning they have a backbone. The answer is Lamprey.
        
                    
             
        
        
        
A report is more detailed and goes further into what you are talking about while a poster is an overview or summary of the topic you are doing. 
        
             
        
        
        
Answer: I put DNA and i'm sure thats the answer
Explanation: DNA is found in the nucleus of every cell in your body. It contains genetic information, in the form of genes, which are passed on from one generation to the next. Your DNA determines all of your traits.
 
        
                    
             
        
        
        
Answer:
Nerve cells release chemical signals into synapses between them (short distance). They also transverse their lengths with an electrical signal that can result in signal travel along a series of cells (long distance).
Explanation:
Nerve cells release neurotransmitters in the synaptic cleft which are capable of affecting nearby cells such as other nerve cells and muscle cells. Neurotransmitter molecules include, among others, serotonin, acetylcholine, dopamine, norepinephrine and histamine. Moreover, the synaptic cleft is the space that separates a neuron cell and its target cell. On the other hand, neurons transmit signals through electrical impulses. Electrical impulses travel long distances in the body carried by axons of the nerves. Thus, nerve impulses connect the brain and spinal cord and they carry signals to different parts of the body.