Answer:
B. Theory
Explanation:
A theory can be changed as new information is discovered.
 
        
             
        
        
        
The three different material that can erupt from a volcano is 
1. Magma/lava (called Basaltic Lava)
2. Ash/ tephra
3. Igneous rock
        
             
        
        
        
Answer:
BENEFITS:
The Descriptive investigation is used to describe a natural system when nothing or very little is known about the system. Like observing a new specimen in the microscope and describing it by observing the specimen.
A comparative analysis is used to compare two or more variable in nature by collecting data like observing the different colors of the rocks. It provides the data to show the similarity and dissimilarity of the population.
The Experimental investigation is used where experiments are performed to test and answer the scientific questions. The advantage is that data can be used as evidence for future research.
LIMITATIONS:
<u>descriptive  method  of  investigation
</u>
It cannot be used to correct variable or be used to determine causes and  effect  of  the  problem
<u>experimental  method  of  investigation
</u>
It might create an artificial situation that do not always represent the real  life situation
<u>comparative  method  of  investigation
</u>
It  is not easy to control other variables that might influence the study
<em>Ngl, I just copy and pasted these answers from another brainly question</em>
 
        
             
        
        
        
Answer:
Plasmin
Explanation:
Plasmin is a serine protease also referred to as fibrin digesting enzyme, it is responsible for the dissolving or degradation of blood clot. The process by which plasmin degrades blood clot is called fibrinolysis. Note that plasmin (active) is formed from an inactive enzyme called plasminogen.
 
        
             
        
        
        
Answer:
You need to use the scientific method and <u>Knowlegde of the environment</u> in order to work as an environmental scientist.
Explanation: