CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
The main process returning CO2 from living cells is:
A. Nitrogen fixation
B. Cellular respiration
C. Osmosis
D. Evaporation
Correct Answer: B
Respiration releases CO2.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
The main process removing atmospheric CO2 into plant biomass is:
A. Photosynthesis
B. Respiration
C. Denitrification
D. Combustion
Correct Answer: A
Photosynthesis fixes CO2.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
A non-renewable fossil fuel is:
A. Tidal energy
B. Coal
C. Sunlight
D. Wind
Correct Answer: B
Coal is non-renewable.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
A renewable source is:
A. Petroleum
B. Coal
C. Natural gas
D. Solar energy
Correct Answer: D
Solar is renewable.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
Biomagnification means contaminant concentration:
A. increases at higher trophic levels
B. equals zero in predators
C. always decreases upward
D. changes into oxygen
Correct Answer: A
Persistent contaminants can magnify up food chains.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
Eutrophication is often driven by excess:
A. nitrogen and phosphorus nutrients
B. sand
C. oxygen only
D. noble gases
Correct Answer: A
Nutrient enrichment causes algal blooms.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
CFCs historically contributed to depletion of:
A. tropospheric nitrogen
B. soil calcium
C. Stratospheric ozone
D. ocean salinity
Correct Answer: C
CFC chlorine radicals destroy ozone.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
The stratospheric ozone layer absorbs much:
A. visible red light only
B. radio waves
C. Ultraviolet radiation
D. sound waves
Correct Answer: C
Ozone absorbs UV.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
Methane is climatically important because it is a:
A. non-absorbing gas
B. major ozone layer constituent
C. noble gas
D. potent greenhouse gas
Correct Answer: D
Methane absorbs infrared radiation.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
The major fossil-fuel greenhouse gas by quantity is:
A. Carbon dioxide
B. Helium
C. Hydrogen
D. Neon
Correct Answer: A
Fossil fuels release CO2.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
Which biogeochemical cycle is best identified by the following description: movement of phosphorus mainly through rocks, soil, water and organisms with little gaseous phase?
A. Water cycle
B. Nitrogen cycle
C. Phosphorus cycle
D. Carbon cycle
Correct Answer: C
The biogeochemical cycle matching 'movement of phosphorus mainly through rocks, soil, water and organisms with little gaseous phase' is Phosphorus cycle.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
Which description is correctly associated with Phosphorus cycle?
A. movement of carbon among atmosphere, organisms, oceans and rocks
B. evaporation, condensation, precipitation and runoff/infiltration
C. conversion and movement of nitrogen among atmosphere, soil and organisms
D. movement of phosphorus mainly through rocks, soil, water and organisms with little gaseous phase
Correct Answer: D
Phosphorus cycle is associated with movement of phosphorus mainly through rocks, soil, water and organisms with little gaseous phase.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
Which biogeochemical cycle is best identified by the following description: evaporation, condensation, precipitation and runoff/infiltration?
A. Nitrogen cycle
B. Water cycle
C. Phosphorus cycle
D. Carbon cycle
Correct Answer: B
The biogeochemical cycle matching 'evaporation, condensation, precipitation and runoff/infiltration' is Water cycle.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
Which description is correctly associated with Water cycle?
A. movement of phosphorus mainly through rocks, soil, water and organisms with little gaseous phase
B. movement of carbon among atmosphere, organisms, oceans and rocks
C. conversion and movement of nitrogen among atmosphere, soil and organisms
D. evaporation, condensation, precipitation and runoff/infiltration
Correct Answer: D
Water cycle is associated with evaporation, condensation, precipitation and runoff/infiltration.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
Which biogeochemical cycle is best identified by the following description: conversion and movement of nitrogen among atmosphere, soil and organisms?
A. Phosphorus cycle
B. Water cycle
C. Carbon cycle
D. Nitrogen cycle
Correct Answer: D
The biogeochemical cycle matching 'conversion and movement of nitrogen among atmosphere, soil and organisms' is Nitrogen cycle.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
Which description is correctly associated with Nitrogen cycle?
A. movement of carbon among atmosphere, organisms, oceans and rocks
B. evaporation, condensation, precipitation and runoff/infiltration
C. movement of phosphorus mainly through rocks, soil, water and organisms with little gaseous phase
D. conversion and movement of nitrogen among atmosphere, soil and organisms
Correct Answer: D
Nitrogen cycle is associated with conversion and movement of nitrogen among atmosphere, soil and organisms.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
Which biogeochemical cycle is best identified by the following description: movement of carbon among atmosphere, organisms, oceans and rocks?
A. Water cycle
B. Nitrogen cycle
C. Phosphorus cycle
D. Carbon cycle
Correct Answer: D
The biogeochemical cycle matching 'movement of carbon among atmosphere, organisms, oceans and rocks' is Carbon cycle.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
Which description is correctly associated with Carbon cycle?
A. movement of phosphorus mainly through rocks, soil, water and organisms with little gaseous phase
B. evaporation, condensation, precipitation and runoff/infiltration
C. conversion and movement of nitrogen among atmosphere, soil and organisms
D. movement of carbon among atmosphere, organisms, oceans and rocks
Correct Answer: D
Carbon cycle is associated with movement of carbon among atmosphere, organisms, oceans and rocks.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
Which pollutant is best identified by the following major effect: raises pathogen load and biological oxygen demand in water?
A. Mercury
B. Untreated sewage
C. Excess nitrates/phosphates
D. Lead
Correct Answer: B
The pollutant matching 'raises pathogen load and biological oxygen demand in water' is Untreated sewage.
CSS - PMS - CCE - PCS - Everyday Science
EnvironmentClimate and Pollution
Which major effect is correctly associated with Untreated sewage?
A. can promote eutrophication
B. air pollutant contributing to acid deposition and respiratory irritation
C. raises pathogen load and biological oxygen demand in water
D. toxic heavy metal that can impair nervous-system development
Correct Answer: C
Untreated sewage is associated with raises pathogen load and biological oxygen demand in water.