Unit 8 Review

Dormancy means what

• deep sleep

• plants/leaves changing color

• inactivity

• all of the above

T/F Circadian rhythm is when you cannot sit still during class.

• True

• False

Circadian rhythm is a reaction to what type of change?

• Short-term changes

• Daily changes

• Seasonal Changes

• Long-term changes

Circadian rhythm is not

• An internal reaction to external stimuli

• Getting tired at night because the sun goes down

• An internal cycle in response to daily changes

• when crickets make similar noises to communicate

If a wildfire burns in a forest, what would most likely happen to the populations of organisms?

• Increase

• Decrease

• Stay the same

• Increase and then Decrease

Tags

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Pick the long-term change example

• Flood

• Wildfire

• Global Warming

• Tornado

Tags

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Humans take land to use for agriculture and food production. What is an impact on the ecosystem because of human involvement?

• More land is taken so the animal population decreases

• More land is taken so the animal population adapts to the human presence

• More land is taken so the population increases because of access to human food

• More land is taken but the population does not change

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What causes ocean acidificaation?

• Humans dump acidic nuclear waste into the ocean

• Excess carbon dioxide emissions dissolve in the ocean and a chemical reaction lowers the pH to make it more acidic

• Excess carbon dioxide emission dissolve in the ocean and a chemical reaction raises the pH to make it more alkaline

• The salt in the ocean oxides and releases chemicals to lower the pH to make it more acidic

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Human activities increase when the human population increases. Which activity increases?

• More land is taken from the ecosystem to support the increased food demands

• Soil erosion and nutrient depletion from excess farmland and quickly harvested crops

• Exhaust from cars, factories, and burning coal increases the air pollution rates

• all of the above

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Humans try to help the endangered species that will be impacted by their expansion. What is one example of humans helping the endangered species when they need to use their habitat to farm or build houses?

• Observing the organisms to see when they will adapt on their own

• Setting aside a small portion of the habitat to preserve the species

• Continue construction or farming in and hope the species will move to a new area

• Introduce new predators to the surrounding areas

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