Answers SY2025-26 - 2002070 MJ Comprehensive Science 2 Sem 1 CRClimate Change

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The Chesapeake Bay is an important natural resource. Over the years, the number of oysters in the bay has declined dramatically, largely because of fishers who catch them and sell them as food. This has affected many other organisms that depend on oysters.

eutrophication

non-sustainable harvesting

nonnative species introduction

pollution

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Which human activity will most likely contribute to ozone layer destruction?

cutting down trees to build a library

using fertilizer to grow bean crops

planting flowers that come from another area

frequently using an air conditioner in the home

Dan drew a diagram to compare the effects of human-induced environmental changes on organisms and species.

Impact on growth and development

Extinction

Change in competition

Loss of habitat

Which is a possible consequence of decreasing air quality resulting from global warming?

drying out of fertile lands

flooding of low-lying coastal areas

melting of glaciers and polar ice caps

decrease in population due to health threats

Which is a cause of desertification?

farming

creating reservoirs

overgrazing

driving motor vehicles

Which two human activities are believed to be the greatest contributors to global warming?

nonnative species introduction and the burning of fossil fuels

deforestation and the burning of fossil fuels

deforestation and nonnative species introduction

non-sustainable harvesting and nonnative species introduction

Which describes one characteristic of both El Niño and La Niña?

Both are causes of long-term climate change.

Both create warmer water.

Both occur in the Pacific Ocean.

Both are causes of hurricane activity.

Which action has a positive effect on air resources?

using fossil fuels

building new homes

walking to work or school

removing vegetation such as trees

Which is an issue that governments must consider before passing conservation policies?

urbanization implications

cost to implement conservation policies

desertification implications

cost to implement deforestation

Which is a negative effect of rising ocean temperatures?

the drying out of fertile land and the formation of dust bowls

the flooding of low-lying coastal areas

the faster evaporation of water in the soil

the decreased frequency of major storms

Which describes an effect that ocean currents have on short-term climate change?

Ocean currents increase the strength of prevailing winds, which can cool the air and land.

Ocean currents can carry cold water, which can cool the air and land.

Ocean currents increase hurricane activity, which can raise the temperature of the air and land.

Ocean currents carry cold water, which may not affect hurricane activity and lower the temperature of the air and land.

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