The correct answer here is C. Water molecules are more free to move, so they will be able to engage in rapid and fluid contact with magma. This is in contrast to fixed continental rock, which may have quick initial heat transfer but which tapers off quickly because the rock is not flexible enough to send cooler rock towards the magma.
        
                    
             
        
        
        
One of the factors that affects the rate of weathering is exposure to the atmosphere. ... Another factor that affects the rate of weathering is the composition of rock. Rocks are composed of minerals, which are solid substances found within rocks that have their own distinct chemical composition.
 
        
             
        
        
        
I think it's A. They have a cell membrane.
Hope this helps!
        
             
        
        
        
Answer:
availability of resources.
Explanation:
Availability of resources is abiotic factor which is responsible for the decrease in population in 1990 because when the population reaches its carrying capacity so the organisms compete with each other and due to limited resources such as food etc the decrease occurs in population. Infection is also occurs when there is high population due to which death occurs and population of organism decreases.