Term
| List several examples of a habitat |
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Definition
| Cave, soil, dead log in a forest, fish aquarium, mouse hole |
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Term
| A living plant, animal or microbe is what? |
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Definition
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Term
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Definition
| The diversity of a species in a given area |
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Term
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Definition
| A community of organisms interacting with abiotic environmental factors |
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Term
| With regards to the carbon cycle, what would be the results of the burning and clearing of a tropical rain forest |
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Definition
| Global warming would increase; less oxygen available, a decrease in biodiversity |
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Term
| What is the ideal pH for freshwater biomes? |
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Definition
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Term
| What activities would have a negative impact on a habitat? |
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Definition
| A snow avalanche, resurfacing a road, off-roading, a forest fire, a nuclear explosion |
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Term
| How is the number of organisms in both lakes and ocean ecosystems determined? |
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Definition
| By the amount of available nutrients and sunlight |
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Term
| Explain how a top predator may increase the diversity of species lower on the food chain |
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Definition
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Term
Young cedar trees require what? [image] |
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Definition
| [image] Shade and an area without ashes |
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Term
| Which trees would have a survival advantage following a fire?[image] |
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Definition
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Term
| Define nonnative species. |
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Definition
| Invasive, not normally found in the area, introduced into an area by humans |
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Term
| Define biological magnification |
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Definition
| The phenomenon in which organisms pick up and concentrate pollutants they cannot metabolize |
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Term
| What is the most common explanation for population growth by a non-native species? |
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Definition
| They have found many unoccupied niches. |
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Term
What does the graph show about the earth’s atmosphere? [image] |
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Definition
| [image] As the concentration of carbon dioxide increases, the temperature also increases. |
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Term
| Most scientists are concerned that global warming is the result of |
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Definition
| an increase in the concentration of carbon dioxide in the atmosphere. |
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Term
| The maintenance of a self-sustaining ecosystem requires what? |
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Definition
| Cycling of materials between organisms and their environment |
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Term
| Why does each successive feeding level in a pyramid of energy have less biomass? |
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Definition
| Carnivore biomass is less than producer biomass as a result of energy being lost as it flows from producers to carnivores. |
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Term
| What is the most likely order of succession in the repopulation of an area? |
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Definition
| lichens -> grasses-> shrubs-> trees |
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Term
According to the graph which one is a carnivore? [image] |
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Definition
| Hawk, snake, lizard,[image] |
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Term
| According to the food web, which of these describes the relationship between the snake and the chipmunk |
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Definition
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Term
| The transition from a tropical rain forest to a grassland is marked by fewer and fewer trees. This is most likely caused by a decrease in |
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Definition
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Term
| What is the ultimate source of energy for the majority of life on Earth? |
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Definition
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Term
| Many more species of plants and animals live in a tropical forest than live in a desert. This difference is most likely due to the fact that, compared to a tropical forest, a desert |
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Definition
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Term
| Sea otters eat sea urchins. Sea urchins eat kelp, a type of brown algae. What might be the short-term effect on the ecosystem if great numbers of sea otters were removed from this environment? |
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Definition
| Increase in sea urchin population & decrease in kelp population |
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Term
| What part of the ecosystem is not recycled through the Earth’s ecosystems |
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Definition
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Term
According to the graph, the human population [image] |
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Definition
| [image] remained essentially unchanged for thousands of years. |
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Term
| Natural populations numbers increase and decrease around the carrying capacity when they reach |
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Definition
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Term
| A group of similar-looking organisms that breed with each other and produce fertile offspring make up a ____ and if they are in the same area a _________. |
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Definition
| species and in the same area a population. |
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Term
| 33. Rabbits introduced into Australia over 100 years ago have become a serious pest to farmers. Rabbit populations increased so much that they displaced many native species of plant eaters. What is the most logical explanation for their increased numbers? |
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Definition
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Term
| If a population grows larger than the carrying capacity of the environment, the ______ |
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Definition
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Term
| Nutrients move through the biosphere in nutrient or ____ |
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Definition
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Term
| As water cycles through the ecosystem, which process returns it to the atmosphere |
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Definition
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Term
| Local and federal legislation have placed limits on the amount of nitrogen containing fertilizers to be tolerated in field run-off into a lake. The reason for this legislation is that run-off of the fertilizers would most likely produce ____ |
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Definition
| an increase in algal growth. |
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Term
| What does each of the letters on the chart represent? |
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Definition
| [image]
A – evaporation, B – condensation, C – precipitation, D – ocean/water |
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Term
| Probably the most important factors affecting the distribution of biomes are |
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Definition
| climate & climax communities |
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Term
| Complete burning of plant material returns carbon primarily to what? |
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Definition
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Term
| The action of decomposers in the nitrogen cycle most directly aids in the |
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Definition
| restoration of nitrogen compounds to the soil. |
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Term
What is the role of NO3 in the cycle? [image] |
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Definition
| [image] Used by plants for growth. |
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Term
In the carbon cycle, which processes are represented by letters A and B? [image] |
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Definition
| [image] A – cellular respiration, B - photosynthesis |
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Term
Which level of the pyramid represents the largest percentage of available energy? [image] |
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Definition
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Term
According to the chart, which organisms are the top carnivores in the river ecosystem? [image] |
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Definition
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Term
According to the chart, if the trout were overfished, which population of organisms would most likely increase as a direct result? [image] |
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Definition
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Term
If in a species of deer, birds feed by plucking insects off the deer’s hide and the relationship between the bird and the deer is mutualistic, then the organisms benefiting from this relationship are... a) only birds b) only deer c) both birds and deer d) both birds and insects |
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Definition
| Mutualistics = both benefits so both the birds and deer are benefiting from the relationship. |
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Term
When plants and animals die, the carbon in their tissues are returned back to the soil through the action of which organisms? a) secondary consumers b) herbivores c) decomposers d) producers |
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Definition
| Decomposers (like bacteria and fungi) return carbon, nitrogen, phosphorous, magnesium, calcium, etc. back to the soil. |
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Term
Which processes return Carbon into the atmosphere? A feeding and combustion B respiration and combustion C feeding and photosynthesis D photosynthesis and respiration |
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Definition
| Carbon is returned to the atmospher during respiration (organisms) and combustion (burning) |
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Term
The water cycle would not occur if which of the following were missing? A animals B bacteria C solar energy D polar ice caps |
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Definition
| Without the sun there would be no water cycle or no life on Earth as we know it. |
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Term
Which of the following statements describe what all members of a population share? A They are temporally isolated from each other. B They are geographically isolated from each other. C They are members of the same species. D They have identical genes. |
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Definition
| A population is a group of individuals of one species. |
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