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Levels of Organization in Ecosystems
Energy Flow in Ecosystems
Factors that Change Envoronments
Effects of Soil Quality on Ecosystems
Water for Ecosystems and Human Activities
100
Which of the following includes both living and nonliving things? 1. ecosystems 2. population 3. species 4. community
1. Ecosystems
100
Which organism(s) in the food chain shown are example(s) of prey? Grass--->Cricket--->Frog--->Snake
The cricket and the Frog
100
Which statement BEST describes how limiting factors affect the organism in an ecosystem? 1. They destroy resources organisms need to survive. 2. They keep a population from getting too large. 3. They provide what an organism needs to survive.
2. They keep a population from getting too large.
100
What is soil?
A mixture of weathered rock, organic matter, air and water.
100
A basin is a low-lying area where water collects. Which of the following is an example of a basin? 1. a watershed 2. a mountain-top farm 3. runoff 4. a low-lying lake
4. A low-lying lake
200
Which of the following is an abiiotic factor that most organisms need to survive? 1. rocks 2. air 3. niche 4. grass
2. air
200
The largest level of an energy pyramid is made up of...
Producers
200
Which of these is MOST LIKELY to cause floods? 1. an unusually cold winter 2. over-saturated soil 3. landslides 4. stocking a lake with trout
2. over-saturated soil
200
Which of the following describes a 'soil horizon'? 1. the ability of soil to grow plants 2. a layer of soil 3. layers made up of several soil profiles
2. A layer of soil.
200
Which of the following contains groundwater? 1. a lake 2. a river 3. an aquifer 4. an ocean
3. An aquifer
300
Which of these BEST describes a habitat? 1. all the members of a community 2. many diferent species living in the same place 3. the role of an organism in its environment 4. a place where an organism finds what it needs for survival
4. A place where an organism finds what it needs for survival
300
Which type of consumer feeds on both plants and animals?
Ominvore
300
What term describes the maximum numbers of individuals an ecosystem can support?
Carrying Capacity
300
Which soil horizon provides nutrients for plant growth?
The topsoil
300
Which of the following is a feature of the zone of saturation? 1. a layer of impermeable rock 2. porous soil 3. permeable rocka dn soil layers 4. a lake
1. A layer of impermeable rock
400
Which of the following represents the simplest level of organization in the living world? 1. organism 2. biome 3. population 4. ecosystem
1. Organism
400
Which of these organisms is a decomposer? 1. bracket fungus 2. palm tree 3. mouse 4. hawk
1. Bracket Fungus
400
A disease kills most members of a predator population. What is the MOST LIKELY effect on the prey population?
The prey population will greatly increase in size.
400
Which term describes how easily water passes through soil? 1. acidity 2. weathering 3. permeability 4. erosion
3. Permeability
400
Which type of ecosystem is likely to form in an area where moving river water meets a lake or ocean? 1. a forest ecosystem 2. a delta ecosystem 3. a meadow ecosystem 4. a pond ecosystem
2. A delta ecosystem.
500
Which energy resource is renewable? 1. oil 2. natural gas 3. coal 4. sunlight
4. Sunlight
500
Which of the following is a nonrenewable resource? 1. natural gas 2. marsh reeds 3. fish 4. trees
1. Natural Gas
500
Which of the following is NOT a renewable resource? 1. water 2. living things 3. soil 4. minerals
4. Minerals
500
Which of the following is NOT a conservation method? 1. depletion 2. protection 3. recycling 4. reducing
1. Depletion
500
Which of these natural hazards can benefit an ecosystem by bringing new nutrients and fertile soil into an area? 1. wildfire 2. earthquake 3. drought 4. flooding
4. Flooding