Population ecology

Which contribute to a positive population growth?

• immigration

• positive birth rate

• emigration

• positive death rate

Which of the following are density dependent factors?

• competition for resources

• predation

• disease

• natural disasters

Which of the following are examples of a density independent factors?

• forest fire

• seasonal cycles

• storms

• disease

Factors like predation can have a positive benefit to the population of prey organisms because predators tend to keep prey populations below their ___________.

• carrying capacity

• sustainibility number

• exponential growth point

• competition level

A group of organisms of the same species living in the same place at the same time is called a(n) _________.

• ecosystem
• population
• community
• organism

Any factor that limits population growth

• Limiting Factor
• Immigration
• Succession
• Abiotic Factor

If a population grows larger than the carrying capacity of the environment, the population is likely to

• decrease
•  increase
• stay the same

What is the carrying capacity for this sheep population?

• 1.8 million
• 1.25 million
• 1.6 million
• 1.o million