Answer:
Carbon dioxide  has also increased over the last 100 years-- from about 300 ppm to 370 ppm.
Explanation:
 
        
             
        
        
        
Answer:
Characteristics
Explanation:
not genetic diversity that would invlove other organisms, not dna because DNA is not being replictaed,  and not A because come on
 
        
             
        
        
        
Sea urchins tend to have great camouflage because they sometimes carry algae and rocks on their shells. 
<h3>What is camouflage?</h3>
Camouflage is a defense mechanism used by certain organisms to avoid predation or surprisingly attack their prey. 
Different animals possess different camouflage mechanisms. For example;
- Chameleons change their color to that of their immediate environment
- Certain snakes hide in vegetations that blend with their skin color. 
However, sea urchins are aquatic animals that tend to have great camouflage because they sometimes carry algae and rocks on their shells.
Learn more about camouflage at: brainly.com/question/10913375
 
        
             
        
        
        
What do you mean by this question exactly?
        
                    
             
        
        
        
Protozoan infections are parasitic diseases caused by organisms formerly classified in the Kingdom Protozoa. They include organisms classified in Amoebozoa, Excavata, and Chromalveolata. Examples include Entamoeba histolytica, Plasmodium (some of which cause malaria), and Giardia lamblia.