Populations

What is the carrying capacity of the graph?

• around 500
• more than 500
• less than 500
• around 600

Food, water, sunlight, shelter, and space are resources that are  __________.

• limiting factors
• biotic

• unlimited

• found in rocks

Two arctic fox are fighting with a polar bear for a sea lion carcass. One fox distracts the bear while the other eats. What type of limiting factor is the polar bear?

• Predator-Prey Relationships

• Competition

• Herbivory Effect

• Weather

Which of the following would INCREASE the carrying capacity of an ecosystem?

• increase in predators
• disease
• increase in available food
• drought

Parasites and diseases will ______________ the size of a population, so the are examples of limiting factors.

• Increase

• Decrease

• Stay the same

What is the difference between the biotic and abiotic factors?

• Biotic factors are living things and abiotic factors are nonliving things.

• Biotic factors are nonliving things and abiotic factors are living things.

In many desert ecosystems, days are hot and nights are cold. Water is scarce, so animals seek water wherever possible. The spines of a cactus are actually leaves adapted to conserve water. The cactus plants have also adapted to live in thin, sandy soil. Which of the following is a biotic component of a desert ecosystem?

• the thin, sandy soil

• the wide temperature range

• the scarcity of water

• the spiny cactus leaves

If the carrying capacity of a predator decreases, what will happen to the carrying capacity of the prey?

• Will Increase
• Will Decrease
• Will stay the same
• Will fluctuate

The largest number of individuals in a species that an environment can support long term

• carrying capacity
• emigration
• immigration
• population density

What will happen to the population when the death rate is larger than the birth rate?

• grow
• shrink
• stay the same