2C/H Science- Final Exam Study Prep

What is Ecology?

• a collection of all the organisms that live in a particular place, together with their nonliving, or physical, environment.

• contains the combined portions of the planet in which all of life exists, including the land, water, and air (atmosphere). Our biosphere is called Earth.

• the first layer of the soil found on the surface.

• the study of how living things interact with each other and with their environment.

True or False: The following are examples of biotic factors:

- sunlight, air, the outside temperature

• True

• False

Select the correct order of the Levels of Ecological Organization.

• Individual/Organism, Community, Population, Ecosystem, Biosphere.

• Individual/Organism, Population, Community, Ecosystem, Biosphere.

• Population, Individual, Community, Ecosystem, Biosphere.

• Individual/Organism, Population, Community, Biosphere, Ecosystem.

True or False: the biosphere contains the combined portions of the planet in which all of life exists, including the land, water, and air (atmosphere).

• True

• False

True or False: The following is a list of the layers of soil from top to bottom.

- organic layer

- top soil

- subsoil

- parent material

- bedrock

• True

• False

There are 3 kinds of particles that make up soil. What are the particles?

• Sand, Silt, Clay

• Sand, Silt, Dirt

• Silt, Clay, Playdough

• Sand, Silt, Carbon Dioxide

True or False: Soil particles (sand, silt, clay) bind together to form peds.

• True

• False

What is soil porosity?

• Refers to the pores within the soil. It influences the movement of air and water.

• Refers to the acidity or alkalinity of the soil solution/the concentration of hydrogen ions in the soil solution.

• The proportion of mineral particles of soil.

• The arrangement of soil particles into small clumps, called peds or aggregates.

_______________ is the geological process in which earth materials are worn away and transported by natural forces such as wind or water.

• Soil Porosity

• Reforestation

• Evaporation

• Erosion

True or False: Physical erosion is when rocks are changed into new substances or minerals, chemically.

• True

• False