What limiting factors affect the population in an ecosystem? Select all that apply.

• Food

• Water

• Space

• Time

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A plover is a little bird that walks around inside a crocodile’s open mouth and cleans between the crocodile’s teeth. What type of relationship is this?

• Commensalism

• Parasitism

• Mutualism

• Competition

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All consumers could also be called ____________________.

• Producers

• Autotrophs

• Apex Predators

• Heterotrophs

If the producers in an ecosystem generate 25000 Joules of energy, how much energy will be available for the Secondary Consumers in this ecosystem?

• 2500 Joules

• 50000 Joules

• 250 Joules

• 250000 Joules

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Which of these are renewable resources? Select all that apply.

• Solar

• Coal

• Wind

• Geothermal

Producers such as plants and some bacteria are able to make their own food, so they can also be called _________________.

• Autotrophs

• Heterotrophs

• Chloroplasts

• Joules

Foxes, Lynxes, and Rabbits live in Alaska and Canada. A fox likes to eat rabbits. A lynx also likes to eat rabbits. What type of interaction or relationship does the Fox have with the Lynx?

• Survival

• Competition

• Natural Selection

• Symbiotic

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Foxes, Lynxes, and Rabbits live in Alaska and Canada. A fox likes to eat rabbits. A lynx also likes to eat rabbits. What type of interaction or relationship does the Fox have with the Rabbit?

• Competition

• Symbiotic

• Primary Consumer

• Predator - Prey

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Work and Energy are both measured in units called ________________.

• Newtons

• Joules

• Watts

• Kelvin

Which of the following are non-renewable resources used for energy production? Select all that apply.

• Petroleum (Oil)

• Coal

• Solar

• Hyrdoelectric