science test

Which of the following best describes the advantages of using hydrofluorocarbons (HFCs) or hydrochlorofluorocarbon (HCFCs) to replace chlorofluorocarbons(CFCs) in industrial processes

HFCs and HCFCs have lower ozone-depleting potentials than CFCs do

Which of the following best identifies the reason that chlorofluorocarbons (CFCs) were banned in 1996 by the Monereal Protocol

CFCs led to the destruction of stratosperic ozone

Which of the following describes a negative effect of substituting hydrofluorocarbons (HCFCs) for chlorofluorocarbons (CFcs) in an effect to reduce Ozone depletion

Some type of hydro fluorocarbons are greenhouse gases that contribute to global climate change

The data in the graph reflect threats identifined in species recovery plans.

Based on the data in the graph, altering human activity in which of the following areas will most benefit plant species

Introduction of invasive species

The data in the graph reflect threats identified in species recovery plans.

Local legislation was passed to protect animal species prone to extinction the legislation included criminalizing poaching, setting limits on numbers of fish people can catch and protecting habitats which of the following threats shown in the graph will most likely decrease the most as a result of legislation

Over harvesting

The data in the graph reflect threats identified in species recovery plans.

Which of the following is likely explanation for the difference shown in the graph for the precent of animals and the precent of pkacnts threatens by transient-human activity

Animals are mobile and able to avoid trampling but because plants are stationary transient- human activity affects a larger percent of plants than of animals

Which of the following best describes how an anthropogenic activity increases ocean acidification?

Emissions from power plants that burn fossil fuels increase atmospheric carbon dioxide, which is absorbed by the ocean

Which of the following events would most likely lead to decrease in the pH in the oceans

Increased burning of fossil fuels in power plants

Which of the following best describes how ocean acidification affects coral formation

The increase in hydrogen ions dissolved in the ocean water sequesters available carbonate ions, preventing the use of calcium carbonate for coral skeleton formation

Which of the following best decribes the primary cause of global warming

Increased global temperature from an increase in greenhouse gases in the atmosphere

Coral bleaching can be hazardous to some fish species because…

coral reefs provide unique habitats for fish

The following enviromental problems is most directly linked to ocean warming

coral bleaching

Which of the following types of releases of greenhouse gases from an anthropogenic sources is shown in the diagram

Industrial and agricultural practices releasing CH4 into the atmosphere

Based on the diagram which of the following best illustrates how the biosphere can affect global climate change

producers use solar energy for photosynthesis decreasing the amount of carbon dioxide inn the atrmosphere and increasing the amount of carbon sequestered in plant tissue

Based on the diagram which of the following best predicts how an increase in greenhoouse gases would affect the ocean

the oceans would be warmed because of increased solar radiation being absorbed by the water, causing expansion and sea level rise

which of the following best describes an advantage of constructing haitat corridors

Corridors connect habitats seperated by fragmentation and connect wildlife populations

Which of the following best describes a disadvantage of creating series of protected habitats in an effort to maintain biodiversity

Protected habitats often separate species indisde the habitat from other population of the same species living outside habitat

Many organisms such as honeybees and livestock have been domesticated for economic reasons which of the following best describes an unintended consequence of this practice?

As humans tamed wild organisms to amplify desired traits genetic diversity decreased in the organisms populations

ixty-five percent of global greenhouse gas emissions are made up of carbon dioxide, while only sixteen percent are made up of methane gas.

Which of the following best explains why scientists are increasingly concerned about the effect of methane gas emissions on global climate if they are a relatively small percent of greenhouse gases released?

Methane gas has a higher global warming potential (GWP) than carbon dioxide does, so it can trap more heat in the atmosphere.

Which of the following best describes why water vapor, a greenhouse gas, is not considered a significant contributor to global climate change?

Water vapor has a relatively short residence time in the atmosphere

Which of the following best describes the greenhouse effect on Earth?

Greenhouse gases trap heat near Earth’s surface, keeping the average surface temperature constant.

Which of the following best describes the importance of ozone in the stratosphere to life on Earth?

Ozone absorbs most of the ultraviolet radiation from the Sun.

Stratospheric ozone (O3) is essential for life to exist on Earth because it

absorbs incoming solar UV-C radiation, preventing exposure to dangerous radiation from the Sun

Which of the following best describes the effect of temperature on the chemical reactions that result in ozone layer depletion?

Low temperatures create polar stratospheric clouds that lead to the production of free radicals of chlorine, which result in the breakdown of ozone at the beginning of the antarctic spring.