Answer:
Paddle like swimmerets are used for movement by crustaceans.
 
        
                    
             
        
        
        
Answer:
4 mass extinctions 
Explanation:
as there are huge drops in the graphs
at 440,390,260,50
Mark me as brainliest pls
 
        
             
        
        
        
There are a couple reasons the ice is important to polar bears, but given the choices you have the correct one would be:
A. The polar bears can’t out swim the seals, so they sit quietly on an ice platform and attack the seals when they come  up for air.
 
        
                    
             
        
        
        
Answer:
Independent variable: ALTITUDE
dependent variable: GROWTH OF PLANTS 
Confounding variable: STOREYS OF THE BUILDING
Explanation:
In an experiment, the basic components i.e primary variables that an experiment should contain, are the independent and dependent variables. 
- The independent variable is the variable that is changed or manipulated in an experiment. In this experiment, the ALTITUDE of the plant is the independent variable. 
- The dependent variable is the variable that responds to changes to the independent variable. It is the variable measured in an experiment. In this case, the dependent variable is the GROWTH OF THE PLANTS. 
- The confounding variable is a variable that has an extra influence on the outcome of the experiment. In other words, the confounding variable has an impact on the dependent variable. In this case, the confounding variable is the STOREYS OF THE BUILDING.
 
        
             
        
        
        
Answer:
Those types include recreational, transport, agricultural, residential, and commercial.
Explanation: