Several factors could decrease the population size of an established plant species, including habitat destruction, competition with invasive species, and changes in climate that alter the conditions necessary for growth. Additionally, overharvesting or excessive grazing by herbivores can significantly impact their numbers. Pollution and changes in soil quality can also negatively affect their survival and reproduction rates.
The species that is better adapted to the environment and able to acquire resources more effectively will likely outcompete the other species. This can lead to a decrease in population or even local extinction of the less competitive species.
Which would most likely decrease the genetic variation in the human population?
a link in the food chain is probable broken. ( a species became extinct)
Yes, a species population is likely to decrease if its habitat changes significantly. Alterations such as habitat destruction, climate change, or pollution can disrupt the food supply, breeding areas, and overall living conditions essential for survival. This can lead to increased mortality rates, decreased reproduction, and ultimately a decline in population numbers. Additionally, species that cannot adapt to the new conditions may face extinction.
If the human population was reduced to a very small number of interbreeding individual then this small population, denied outbreeding, would have very little genetic variation. Humans, who went through a bottleneck event about 70,000 years ago, are considered a " small " species because they have little genetic variation in comparison to many other species. Google cheetah to see how this concept works.
Decrease, as snakes are predators of frogs and an increase in snake population would lead to more predation on frogs, reducing their population.
It will decrease
decrease the number of hawks
The superior competitor is likely to outcompete the other species for resources, leading to a decrease in the population of the inferior competitor. This could potentially lead to the inferior competitor being displaced or evolving to occupy a different niche to reduce competition.
An increase in predation pressure or a decrease in food availability are factors most likely to result in a decrease in the size of a specific population. These factors can lead to increased mortality rates and reduced reproductive success, ultimately causing the population to decline in numbers.
The aliens start attacking them more
the plankton population would decrease