The alveoli are surrounded by tiny blood vessels, called capillaries carrying blood to and from the heart.
Homeostasis is essential because it maintains internal stability
B. All birds have feathers and hollow bones, but not all birds fly (ostrich, emu, kiwi, etc).
Answer: The correct answer is- Intraspecific competition.
Intraspecific competition can be described as an interaction in a population where members belonging to the same species compete for a limited resource ( such as food, water).
As per the information given in the question, both organisms ( grizzly bears) belong to the same species and competing for fish, which is food for them.
Thus, it is an example of Intraspecific competition.
