The response that BEST describes what an ecosystem is would be:
interacting organisms and their physical environment
Which of the following BEST describes what an ecosystem is?
(1 point)
Responses
nutrients dissolved in water supporting life
nutrients dissolved in water supporting life
interacting organisms and their physical environment
interacting organisms and their physical environment
water flow through a watershed
water flow through a watershed
transportation and flow of water to maintain a habitat
9 answers
Without human oversight, water is unable to regulate safe amounts of nutrients dissolved in it. Which of the following is a resulting negative impact that can occur in an aquatic ecosystem?
(1 point)
Responses
Erosion can occur in rivers.
Erosion can occur in rivers.
Water can evaporate faster.
Water can evaporate faster.
Carbon dioxide can be released.
Carbon dioxide can be released.
Equilibrium can be disrupted.
(1 point)
Responses
Erosion can occur in rivers.
Erosion can occur in rivers.
Water can evaporate faster.
Water can evaporate faster.
Carbon dioxide can be released.
Carbon dioxide can be released.
Equilibrium can be disrupted.
The resulting negative impact that can occur in an aquatic ecosystem due to the inability of water to regulate safe amounts of nutrients dissolved in it is:
Equilibrium can be disrupted.
Rohan is an engineer who determines the quantity of water that flows from a river into a dam. Which of the following tools will he MOST likely use at his job?
(1 point)
Responses
Secchi disk
Secchi disk
topographic map
topographic map
atomic absorption spectrometer
atomic absorption spectrometer
water quality strips
(1 point)
Responses
Secchi disk
Secchi disk
topographic map
topographic map
atomic absorption spectrometer
atomic absorption spectrometer
water quality strips
Rohan is most likely to use a topographic map at his job to determine the quantity of water that flows from a river into a dam.
Some researchers have hypothesized that there could be trace metals in sea water. To test this hypothesis, they collect samples of sea water. What will they MOST likely do with the samples after they are collected?
(1 point)
Responses
use a hydrometer to measure salinity
use a hydrometer to measure salinity
use water litmus paper to determine the acidity
use water litmus paper to determine the acidity
use a turbidity meter to calculate light transmission
use a turbidity meter to calculate light transmission
use an atomic absorption spectrometer to detect elements and compounds
(1 point)
Responses
use a hydrometer to measure salinity
use a hydrometer to measure salinity
use water litmus paper to determine the acidity
use water litmus paper to determine the acidity
use a turbidity meter to calculate light transmission
use a turbidity meter to calculate light transmission
use an atomic absorption spectrometer to detect elements and compounds
To test for trace metals in sea water, the researchers will MOST likely use an atomic absorption spectrometer to detect elements and compounds.
What is an area of land that channels all the bodies of water within it to a common outflow point?
(1 point)
Responses
groundwater
groundwater
river
river
watershed
watershed
leaching
(1 point)
Responses
groundwater
groundwater
river
river
watershed
watershed
leaching
The area of land that channels all the bodies of water within it to a common outflow point is called a watershed.