Which is an abiotic factor that most limits the number of frogs living in a pond? 

• the color of the water 
• the number of predators 
• the temperature of the water 
• the populations of producers 

Field mice are the primary food source for horned owls in an area. Due to a drought, many field mice left the area. Which result would this drought most likely have on the horned owls?

• The horned owl population will consume more field mice.
• Horned owls will follow the field mice to a different area.
• The horned owl population will increase in the area.
• Horned owls will change to a plant-based diet.

All organisms of a species that live in the same place at the same time is called

• species

• predation

• population

• habitat

Living parts of an ecosystem are called...

• species

• abiotic factors

• biotic factors

• population

Examples of autotrophs are...

• 
• 
• 
• 

What percentage of energy is passed from one trophic level to the next trophic level?

• About 25% of the energy is passed to the next trophic level.

• Only about 10% of the energy at one level is passed to the next.

• About 50% of the energy is passed

• 50% of energy is passed from one trophic level to the next

How many carnivores are shown in this food web?

• 6
• 4
• 5
• 3

Which of the following is a herbivore?

• cricket
• frog
• hawk
• shrew

The rabbit in this food web would be considered a:

• Decomposer
• Producer
• Secondary Consumer
• Primary Consumer

The meanings of the terms habitat and niche are often confused or are intertwined. Which of the following describes the difference between these two terms?

• A niche is the place where an organism lives. A habitat is the job or role of an organism.

• A habitat has to do with how the organism interacts with its environment. A niche is the job or role of an organism.

• A habitat is a place where an organism lives. A niche is the job or role of an organism.

• A niche involves the food, water, and shelter that an organism has access to. A habitat is a place where an organism lives.