They allow the heart to pump more blood by decreasing the ESV.
Answer:
A particular population limiting factor or factors must have been removed
Explanation:
The population of the birds must have been kept between 30 and 50 individuals by population limiting factors such as the presence of predators within the community or competition for resources such as food or spaces.
For the population to shoot up to 90 all of a sudden, it may be that one or more of the population limiting factors has been removed from the population. <u>It could be that a major predator has been removed from the community or the competition for food/space is now significantly reduced due to more food/space in the community. </u>
When the ph freshwater becomes highly alkaline, it causes fish to die and damage to outer surface like grills, eyes and skin
Stable elements are those which have atleast one isotope with no tendency to "decay", i.e., change into anotherelement.
