Unit 1&2
Unit 1 : How do atoms relate to molecules?
Answer : A group of 2+ atoms is what makes a molecule.
Unit 3 : What is one non living environmental factor that differentiates aquatic ecosystems and habitats?
Answers that are acceptable : Salinity, Temperature, Amount of sunlight, Dissolved Oxygen, Nutrient level, Turbidity
Unit 5 : Which two animals are threatened by poaching?
Answer : Elephants and Rhinoceros
Unit 7 : True or False: Polar systems have producers that are algae, phytoplankton, etc.
Answer : True
Unit 4 : Are all forests warm year-round?
Answer: Forests can be warm year-round OR have seasonal temperatures.
Unit 1 : What is stopping individuals in a population from growing forever?
Answer : Limiting factors in environments prevent population sizes from growing forever.
Unit 3 : What is the difference between plankton and nekton?
Answer : Plankton are small, free-floating or weakly swimming while Nekton are large, independent swimmers.
Unit 5 : What is a solution for overgrazing?
Answer : Solutions - Don’t go over the carrying capacity for fields / Move the herds from field to field to give time for plants to regrow.
Unit 7 : The Arctic Tundra is found in:
a. Northern Canada
b. Northern Alaska
c. Northern Russia
d. All of the above
Answer : d. All of the above
Unit 3 : The ocean floor receives a constant flow of detritus from above called ______.
Answer : Marine Snow
Unit 1 : A limiting factor is an ____ or _____ ______ that controls the size of a population.
Answer : Abiotic or biotic factor.
Unit 3 : Freshwater has less than ___ % of salt.
Answer : 1%
Unit 5 : How does fire help maintain a healthy grassland ecosystem?
Answer : Fires warm up the soil and reduces the dead plant leaves that build up each year. After a fire, the burned fields quickly bounce back with new grasses and abundant wildflowers.
Unit 7 : Where are alpine tundras found and what are their climates influenced by?
Answer : Alpine tundras are found on top of high mountains with climate influenced by high altitudes.
Unit 2 : Which greenhouse gas is made the most by humans?
a. Methane
b. Nitrous Oxide
c. Carbon Dioxide
Answer : C. Carbon Dioxide
Unit 2: Which is not a component of biodiversity?
a. Species Diversity
b. Population Diversity
c. Genetic Diversity
d. Ecosystem Diversity
Answer: b. Population Diversity
Unit 4 : True or False: Broadleaf trees have narrow, wax-coated needle-shaped leaves.
Answer: False - Broadleaf trees have wide, broad, flat leaves.
Unit 6 : What two factors determine seasons?
Answer : Temperature or Precipitation
Unit 8 : Which is NOT a threat to biodiversity?
a. Habitat Destruction
b. Pollution
c. Exploitation
d. Buying pets.
Answer : d. Buying pets
Unit 8 : Acid rain is caused by the release of ____ dioxide and _____ oxides into the atmosphere, reacting with ____ _____ .
Answer : Sulfur, Nitrogen, Water vapor
Unit 2 : True or False - Climate describes short term conditions.
Answer : False - Climate is actually conditions over an extended period of time.
Unit 4 : What are the most significant abiotic factors in any biome?
Answer : Temperature and Precipitation
Unit 6 : List two other names for Chaparrals.
Answers that are acceptable : Scrub Woodland, Desert Scrub, Scrublands, Mediterranean Scrub, or Shrublands
Unit 8 : True or False: Nature does not provide the ecosystems services of purifying air & water
Answer : False - Nature does purify air and water.
Unit 7: Why is the Antarctic Tundra smaller than the Arctic Tundra?
Answer : The Antarctic Tundra is smaller than the Arctic Tundra because most of Antarctica is covered by ice fields, with the land too cold and dry to support vegetation.