18. Which of the following statements is false? a) Saltwater typically has miner
ID: 110464 • Letter: 1
Question
18. Which of the following statements is false?
a) Saltwater typically has mineral content consisting of more than 35 parts/1,000.
b) Mineral content in a lake increases when temperatures increase.
c) Mineral content in a lake increases if its water inputs decrease.
d) Freshwater typically has no mineral content.
28. Which statement concerning biodiversity is NOT correct?
a) Tropical rainforests generally have high levels of biodiversity
b) Biodiversity levels in deserts tend to be lower than grasslands
c) Biodiversity levels in grasslands tend to be higher than those in forests
d) Biodiversity levels in arctic regions tend to be lower than forests
29. The Carbon Cycle is an important biochemical cycle on Earth. Describe the basic steps of the Carbon Cycle, and how concentrations of atmospheric and terrestrial carbon can fluctuate.
30. At which latitude would you expect the highest levels of photosynthetic activity (plant activity) to take place?
a) 90 degrees
b) 0 degrees
c) 60 degrees
d) 30 degrees
31. When we studied “food chains”, we noted that the number of individuals at each tropic level went down as we went up the chain. Why does this drop in individuals happen as the tropic levels increase?
32. Through seed dispersal…
a) biodiversity levels are lowered
b) plants are spread to new networks
c) all of these
d) people migrate to new areas
33. Please provide an example of an “invasive species,” and identify the environment in which it is invasive.
35. Please list the zones of altitudinal zonation, and how they change as elevation increases.
36. A hill side with a steep slope is likely to have which type of drainage?
a) Parallel
b) Centripetal
c) Rectangular
d) Trellis
37. Please provide an example of a “mechanical weathering” process, and explain how it breaks down rocks.
38. “Sink holes” are land forms caused by which type of weathering?
a) Mechanical
b) Chemical
c) all of these
d) Biotic
39. Sand particles are most often transported through water and air through which kind of movement?
a) none of these
b) Saltation
c) Traction
d) Suspension
40. “Alluvial fans” and “deltas” are examples of…
a) depositional landforms produced by river systems
b) erosional landforms produced by glaciers
c) erosional landforms produced by river systems
d) depositional landforms produced by glaciers
41. “Aretes” and “horns” are examples of…
a) depositional landforms produced by glaciers
b) erosional landforms produced by glaciers
c) erosional landforms produced by river systems
d) depositional landforms produced by river systems
42. Which of the following is TRUE regarding deserts and erosion?
a) all of these
b) Water is scarce in deserts, but has a great effect on desert erosion
c) Deserts are generally very eroded
d) The typical lack of plants in deserts encourages erosion
43. Please describe the landform assemblage we have in the Imperial Valley and provide examples of one erosional and one depositional landform we could find here.
44. Please explain where we would generally expect to find coral reefs, and describe the environmental conditions necessary for coral to flourish.
45. Although oscillating waves in oceans and lakes appear to be moving forward, the motion they cause is actually
a) up and down
b) backwards
c) side to side
d) compressing
46. Please describe the conditions of a coastline that would best promote beach formation.
Explanation / Answer
STEP 1
18. Which of the following statements is false?
a) Saltwater typically has mineral content consisting of more than 35 parts/1,000.
b) Mineral content in a lake increases when temperatures increase.
c) Mineral content in a lake increases if its water inputs decrease.
d) Freshwater typically has no mineral content.
Answer is D.
Because in the fresh water like ground water, there are some mineral present like iron
STEP 2
28. Which statement concerning biodiversity is NOT correct?
a) Tropical rainforests generally have high levels of biodiversity
b) Biodiversity levels in deserts tend to be lower than grasslands
c) Biodiversity levels in grasslands tend to be higher than those in forests
d) Biodiversity levels in arctic regions tend to be lower than forests
Answer is B
Biodiversity levels in deserts tend to be lower than grasslands
STEP 3
30. At which latitude would you expect the highest levels of photosynthetic activity (plant activity) to take place?
a) 90 degrees
b) 0 degrees
c) 60 degrees
d) 30 degrees
Answer is B
Because at 0 degree latitude sun ray fall perpendicular to the earth surface , therefore energy per unit area is highest here than others
STEP 4
37. Please provide an example of a “mechanical weathering” process, and explain how it breaks down rocks.
ANSWER
example of a “mechanical weathering” process is Break down of rock due to temperature change (heating and cooling process)in desert area
Explanation : in the desert area temperature during day time is very high but in night time very less . therefore during day time rock absorb heat and expand . on the other hand during night time it emits heat energy and reverse of expansion occurs . this process occurs again and again , so crack occur in rock and break down in to small particle
STEP 5
39. Sand particles are most often transported through water and air through which kind of movement?
a) none of these
b) Saltation
c) Traction
d) Suspension
Answer is B
By the saltation proess sand particle moves through a series of jumping
STEP 6
38. “Sink holes” are land forms caused by which type of weathering?
a) Mechanical
b) Chemical
c) all of these
d) Biotic
ANSWER IS B
Because when chemical weathering of limestone occurs within the ground ( underground ) due to water , thn sink holes created .
STEP 7
40. “Alluvial fans” and “deltas” are examples of…
a) depositional landforms produced by river systems
b) erosional landforms produced by glaciers
c) erosional landforms produced by river systems
d) depositional landforms produced by glaciers
ANSWER IS A
Alluvial fans” and “deltas” are examples of depositional landforms produced by river systems
Alluvial fans create at lower portion of hill or mountant and deltas at joining part of river and sea
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