UNIT 10 EXAM RETEST

What is the primary source of energy for most ecosystems?

• Water

• Sunlight

• Soil

• Wind

Tags

TEKS.SCI.6.12A

Which of the following is a biotic factor in an ecosystem?

• Temperature

• Light

• Water

• Plants

Tags

TEKS.SCI.6.12A

How does human activity primarily affect ocean systems?

• By increasing biodiversity

• By reducing pollution

• By causing habitat destruction

• By stabilizing temperatures

Tags

TEKS.SCI.7.11B

Which human activity is most likely to lead to ocean acidification?

• Overfishing

• Deforestation

• Burning fossil fuels

• Urban development

Tags

TEKS.SCI.7.11B

What role does biodiversity play in the stability of an ecosystem?

• It decreases competition

• It increases resilience to changes

• It reduces the number of species

• It limits resource availability

Tags

TEKS.SCI.8.12C

How does biodiversity contribute to the health of organisms within an ecosystem?

• By providing a variety of food sources

• By reducing genetic variation

• By limiting habitat space

• By increasing competition

Tags

TEKS.SCI.8.12C

What is primary ecological succession?

• The gradual replacement of one community by another

• The establishment of a community in an area of bare rock

• The sudden change in an ecosystem due to human activity

• The extinction of a species

Tags

TEKS.SCI.8.12B

How does secondary succession differ from primary succession?

• It occurs in areas where no soil exists

• It begins in areas where soil is already present

• It involves only plant species

• It does not involve any animal species

Tags

TEKS.SCI.8.12B

What is the impact of a natural disaster on the energy transfer in a food web?

• It increases energy flow

• It stabilizes energy transfer

• It disrupts energy transfer

• It has no effect

Tags

TEKS.SCI.8.12A

How can human intervention impact the transfer of energy in ecosystems?

• By enhancing natural energy flow

• By creating new energy sources

• By disrupting food chains

• By maintaining ecological balance

Tags

TEKS.SCI.8.12A