1) Which is an example of a changing biotic factor in an ecosystem? a) An increase in the usual amount of winter snowfall  b) An increase in sunlight during the summer c) Seasonal changes in temperature d) Seasonal migration of birds 2) A resilient ecosystem… (2 answers) a) Is able to recover from, or adjust easily to change. b) Has less biodiversity due to invasive species. c) Has been impacted by a natural disaster such as a tornado. d) Is more likely to have greater biodiversity 3) A population of mice occupies a tree stump. For ten years, the population has been stable. Which of the following would likely cause the number of mice to begin to decrease? a) An increase in predators (who eat them) b) A decrease in competition between the mice c) A decrease in disease d) An increase in mating season 4) Choose the correct energy pyramid. a) b) c) d) 5) Animal behaviors are essential for maintaining ___1___, which is the body's ability to stay in a stable internal state. For example, seeking shade when hot or shivering when cold are behaviors that help ___2___ body temperature, while drinking water is a ___3___ to restore water balance. These behavioral adjustments, along with internal physiological processes, allow animals to adapt to their environment and survive. a) 1 - behavior b) 1 - homeostasis c) 1 - regulate 6) Animal behaviors are essential for maintaining ___1___, which is the body's ability to stay in a stable internal state. For example, seeking shade when hot or shivering when cold are behaviors that help ___2___ body temperature, while drinking water is a ___3___ to restore water balance. These behavioral adjustments, along with internal physiological processes, allow animals to adapt to their environment and survive. a) 2 - behavior b) 2 - homeostasis c) 2 - regulate 7) Animal behaviors are essential for maintaining ___1___, which is the body's ability to stay in a stable internal state. For example, seeking shade when hot or shivering when cold are behaviors that help ___2___ body temperature, while drinking water is a ___3___ to restore water balance. These behavioral adjustments, along with internal physiological processes, allow animals to adapt to their environment and survive. a) 3 - behavior b) 3 - homeostasis c) 3 - regulate 8) If the lowest trophic level has 10,000kcal of energy, how much will the highest trophic level get? a) 10,000kcal b) 1,000kcal c) 100kcal d) 10kcal 9) Which best describes how limiting factors affect all of the species in this ecosystem? a) The species are all affected by the same limiting factors because they live in the same ecosystem. b) All of the consumer species are affected by the same limiting factors because they have the same diet. c) The species are affected by different limiting factors because they have different roles within the ecosystem. d) No species in the ecosystem are affected by the same limiting factors because they all have different needs. 10) When a partially rotted log was turned over, fungi, termites, pill bugs, ants, slugs, and earthworms were found to be living in and around it. These organisms collectively represent a.. a) Population  b) Community c) Biosphere d) Species

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