- 12.1: Which would you use to describe a collection ofsea anemones, sea st...
- 12.2: Which measurement would you include in anassignment to measure biot...
- 12.3: Because green plants need moisture, light, andsoil, what do they de...
- 12.4: The figure below shows how the Suns rays hitEarth. Why are the pole...
- 12.5: Which group is a population?A. plants and animals in a meadow 5.cB....
- 12.6: In which type of biome would you find thegreatest number of species...
- 12.7: Which is the largest biome?A. desert 5.dB. tundraC. taigaD. rain fo...
- 12.8: Plants and animals that are adapted to hot, drysummers and mild, ra...
- 12.9: What is the main reason different biomes supportdifferent plant and...
- 12.10: Design an experiment to test the effects of abioticfactors on the g...
- 12.11: Describe how life in desert biomes depends onabiotic factors.
- 12.12: Infer why you would expect to find more animalsliving in ecosystems...
- 12.13: Identify three possible limiting factors for abiome of your choice....
- 12.14: Analyze how polar bears adapt to theirbiome
- 12.15: Analyze In a California forest, deer eat plants.Mountain lions kill...
- 12.16: Compare and contrast biotic and abiotic factorsin an ecosystem of y...
- 12.17: Interpreting Graphs The graph below showsyearly rainfall for four b...
- 12.18: Write about a rotting log habitat. Explain howspecies and populatio...
- 12.19: How much more aluminum sulfate wouldbe needed to lower the pH from ...
- 12.20: Which pH changes could be made using1.5 kg of aluminum sulfate?
- 12.21: How much more aluminum sulfate wouldbe needed to lower the pH from ...
- 12.22: Which pH changes could be made using0.6 kg of aluminum sulfate?
- 12.23: How much more aluminum sulfate wouldbe needed to lower the pH from ...
Solutions for Chapter 12: Ecological Roles
Full solutions for Focus on Physical Science: Grade 8, California | 1st Edition
A theory that relates the formation of precipitation to supercooled clouds, freezing nuclei, and the different saturation levels of ice and liquid water.
Wastage of a glacier that occurs when large pieces of ice break off into water.
A theory of raindrop formation in warm clouds (above 0° C) in which large cloud droplets (giants) collide and join together with smaller droplets to form a raindrop. Opposite electrical charges may bind the cloud droplets together.
Coriolis force (effect)
The deflective force of Earth’s rotation on all free-moving objects, including the atmosphere and oceans. Deflection is to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
Detrital sedimentary rock
Rock formed from the accumulation of material that originated and was transported in the form of solid particles derived from both mechanical and chemical weathering.
A climate in which yearly precipitation is not as great as the potential loss of water by evaporation.
A galaxy that is round or elliptical in outline. It contains little gas and dust, no disk or spiral arms, and few hot, bright stars.
Sinuous ridge composed largely of sand and gravel deposited by a stream flowing in a tunnel beneath a glacier near its terminus.
The gradual increase in temperature with depth in the crust. The average is 30° C per kilometer in the upper crust.
Scratches and grooves on bedrock caused by glacial abrasion.
Mixed tidal pattern
A tidal pattern exhibiting two high tides and two low tides per tidal day with a large inequality in high water heights, low water heights, or both. Coastal locations that experience such a tidal pattern may also show alternating periods of diurnal and semidiurnal tidal patterns. Also called mixed semidiurnal.
Pelagic organisms that can move independently of ocean currents by swimming or other means of propulsion.
The source of the Sun’s energy.
A developing planetary body that grows by the accumulation of planetesimals.
Drops of water that fall from clouds that have a diameter of at least 0.5 millimeter (0.02 inch).
A large, cool star of high luminosity; a star occupying the upper-right portion of the Hertzsprung-Russell diagram.
The speed at which a particle falls through a still fluid. The size, shape, and specific gravity of particles influence settling velocity.
A climate found north of the humid continental climate and south of the polar climate and characterized by bitterly cold winters and short, cool summers. Places within this climatic realm experience the highest annual temperature ranges on Earth.
A linear downfold in sedimentary strata; the opposite of anticline.