Planting only red pine trees to replace native hardwood forests cut for lumber.
        
             
        
        
        
Answer:
<u>A. red blood cells containing malaria</u>
Explanation:
Malaria is a disease-causing pathogen in humans. It is caused by species of the parasite <em>Plasmodium sp.</em><em>,</em> which is transmitted as sporozoites by the Anopheles mosquito upon biting the host. These travel through the bloodstream to the liver where they mature into merozoites. These reenter the bloodstream and mature into trophozoites and schizonts that produce more merozoites.
 When they multiply within the red blood cell, they <u>burst the red blood cell open</u>, and go on to infect other cells. This infection's symptoms are cyclic and include high fever, chills and other flu-like symptoms.
Malaria is a deadly illness, causing harm to its hosts, and in many cases death. <u>Thus, this cannot be defined as symbiosis, which is typically beneficial to both organisms.</u>
 
        
             
        
        
        
Answer:
 The main dangers worldwide are population growth and resource consumption, climate change and global warming, habitat conversion and urbanisation, invasive alien species, over-exploitation of natural resources and environmental degradation.
Explanation:
 
        
                    
             
        
        
        
Variable is the object where the observation will either influence or receive the effect from the other object or variable. Hence, variables divided into two distinct parts in a study or traditionally an experimental study which is the independent variable and the dependent variable. The independent variable is the variable that can stand for itself until it affects the dependent variable, which is the variable that was influenced by the independent variable. 
IV: Gender of the alligator 
DV: Temperature at which the alligator mother will need to supply. 
        
                    
             
        
        
        
Answer:
- Hawk B species help other populations survive by keeping snake predation low.
Complete question and Explanation: 
Due to technical problems, you will find the complete question and the explanation in the attached files.