Answer:Sea Floor Spread is where the oceanic crust splits to form new crust on the earth forming ridges.  
Continental slide is when tectonic plates slide past one another formed at the fault line causing earthquakes.
Transform boundaries can be explained by showing what happens after they slide almost like how after an earthquake the houses are destroyed and some have sunk into the grounds fault line.
Continental Crust is the crust of the earth that us humans and animals live on formed by divergent boundaries in the crust.
Explanation:
 
        
             
        
        
        
Answer:
They are different species 
Explanation:
Could be that they look similar or that they can share similar environmental portions of land. But, if one specie has more land to colonized and do not do it, that mean that the environmental conditions are not the ideal for it like it is mention the climate (maybe hotter or cooler) or soil (it has a different pH, is lack of one esential nutrient, etc. ) 
 
        
             
        
        
        
Answer:
The dry-out material contains spores of anthrax-causing bacteria
Explanation:
<em>Anthrax is a disease caused by a bacteria known as Bacillus anthracis. Susceptible animals get infected by anthrax when the spore of the bacteria gets into their bodies, become activated, multiply and produce toxins.</em> 
The spore serves primarily as a propagating structure and also as an agent for transmitting infections. It can be transmitted by air, water, food or any other means. Bacterial spores usually have the capability to tolerate harsh environmental conditions and only become inactivated when conditions are favourable.
The dry granular powdery material constituent of the letters received by the U.S. senators must have been spores of <em>Bacillus anthrasis</em>
 
        
             
        
        
        
Answer:
organizational effect.
Explanation:
Organizational effect is a long-term effect of hormonal action typically occurring in fetal development or the early postnatal period that leads to permanent changes in behavior and neural functioning. For example, the presence of testosterone in young male rats leads to long-term male-typical behavior, and female rats can be masculinized by neonatal exposure to testosterone.
Organizational effects act during development, often during critical period. Such hormones affect the construction or fine-tuning of sex organs or neural circuits underlying behavioral capacities that will be needed in adulthood.
Organizational effects are often under tight genetic control, and not subject to major influence by environment.
Organizational effects are often irreversible.
 
        
             
        
        
        
Through a sequence of steps called the immune response<span>, the </span>immune system<span>attacks these </span>pathogens<span>. ... This is the </span>immune system<span>. Cells. The cells involved are white blood cells (leukocytes), which seek out and destroy disease-causing organisms or substances</span>