Environmental and Conservation Biology

6 years ago

There is more carbon per unit of soil in cold polar regions than in the warm tropics (True or false?)

There is more carbon per unit of soil in cold polar regions than in the warm tropics.

True or False?

Iridium 62 1 Reply

6 years ago

The nitrogen cycle is a series of chemical transformations, which makes it relatively insensitive to ...

The nitrogen cycle is a series of chemical transformations, which makes it relatively insensitive to environmental conditions such as temperature and moisture.

True or False?

mat 56 1 Reply

6 years ago

Lightning converts N2 to a nitrogen form that enters soil and can be readily assimilated by plants. ...

Lightning converts N2 to a nitrogen form that enters soil and can be readily assimilated by plants.

True or False?

mat 78 1 Reply

6 years ago

The process of nitrification produces a form of nitrogen that is easily lost from soil through ...

The process of nitrification produces a form of nitrogen that is easily lost from soil through leaching.

True or False?

melaa 58 1 Reply

6 years ago

Humans have altered the nitrogen cycle by burning fossil fuels. (True or false?)

Humans have altered the nitrogen cycle by burning fossil fuels.

True or False?

Iridium 65 1 Reply

6 years ago

The phosphorus cycle is a sedimentary cycle with essentially no gaseous cycle (True or false?)

The phosphorus cycle is a sedimentary cycle with essentially no gaseous cycle.

True or False?

mat 70 1 Reply

6 years ago

The main reservoir of plant-available phosphorus is organic matter in the soil (True or false?)

The main reservoir of plant-available phosphorus is organic matter in the soil.

True or False?

mat 58 1 Reply

6 years ago

Phosphorus is typically in short supply in aquatic and terrestrial ecosystems (True or false?)

Phosphorus is typically in short supply in aquatic and terrestrial ecosystems.

True or False?

mat 59 1 Reply

6 years ago

The sulfur biogeochemical cycle is a sedimentary cycle with essentially no gaseous cycle.True or ...

The sulfur biogeochemical cycle is a sedimentary cycle with essentially no gaseous cycle.

True or False?

melaa 87 1 Reply

6 years ago

One way that sulfur enters the atmosphere is through volcanic activity (True or false?)

One way that sulfur enters the atmosphere is through volcanic activity.

True or False?

mat 66 1 Reply

6 years ago

Atmospheric sulfur dioxide returns to Earth in rain as weak sulfuric acid (True or false?)

Atmospheric sulfur dioxide returns to Earth in rain as weak sulfuric acid.

True or False?

mat 83 1 Reply

6 years ago

Oceans represent the largest natural source of sulfur gases released to the atmosphere.True or ...

Oceans represent the largest natural source of sulfur gases released to the atmosphere.

True or False?

Iridium 45 1 Reply

6 years ago

Oxygen is taken up by plants during photosynthesis (True or false?)

Oxygen is taken up by plants during photosynthesis.

True or False?

melaa 47 1 Reply

6 years ago

Most aerobic autotrophs produce and consume oxygen in order to live (True or false?)

Most aerobic autotrophs produce and consume oxygen in order to live.

True or False?

mat 57 1 Reply

6 years ago

Undecomposed organic matter in the form of fossil fuels and carbon in sedimentary rocks represents a ...

Undecomposed organic matter in the form of fossil fuels and carbon in sedimentary rocks represents a net positive flux of oxygen to the atmosphere.

True or False?

melaa 52 1 Reply

6 years ago

Stratospheric ozone shields the planet from biologically harmful ultraviolet radiation.True or ...

Stratospheric ozone shields the planet from biologically harmful ultraviolet radiation.

True or False?

Iridium 75 1 Reply

6 years ago

Although nitrogen can act as a fertilizer initially, too much nitrogen added to a forest system can ...

Although nitrogen can act as a fertilizer initially, too much nitrogen added to a forest system can cause forest decline.

True or False?

melaa 62 1 Reply

6 years ago

In the later stages of nitrogen saturation, soils tend to become more acidic, which increases the ...

In the later stages of nitrogen saturation, soils tend to become more acidic, which increases the concentration of aluminum ions in the soil solution.

True or False?

melaa 64 1 Reply

6 years ago

A(n) ________ is a biotic unit of plant formations and associated animal life based on the ...

A(n) ________ is a biotic unit of plant formations and associated animal life based on the predominant plant types, with at least eight major terrestrial types.

Iridium 57 1 Reply

6 years ago

Leaves that live for only a single year or growing season are classified as ________.

mat 59 1 Reply

6 years ago

There are consistent patterns in the distribution and abundance of dominant plant life-forms across ...

There are consistent patterns in the distribution and abundance of dominant plant life-forms across the biosphere because these life-forms share ________ to the selection pressures of climate and the physical environment.

melaa 62 1 Reply

6 years ago

Tropical rain forests are restricted primarily to the ________ zone between latitudes 10° N and ...

Tropical rain forests are restricted primarily to the ________ zone between latitudes 10° N and 10° S.

Iridium 60 1 Reply

6 years ago

Tropical ________ refers to vegetation in the drier tropics and subtropics that is dominated by a ...

Tropical ________ refers to vegetation in the drier tropics and subtropics that is dominated by a ground cover of grasses with scattered shrubs or trees.

Iridium 69 1 Reply

6 years ago

Native grasslands of North America, influenced by declining precipitation from east to west, consist ...

Native grasslands of North America, influenced by declining precipitation from east to west, consist of three main types distinguished by the ________ of the dominant species.

Iridium 67 1 Reply

6 years ago

Arid environments that occur in the rain shadow of mountain barriers or are located far inland where ...

Arid environments that occur in the rain shadow of mountain barriers or are located far inland where moist maritime air rarely penetrates are referred to as ________.

mat 89 1 Reply

6 years ago

A(n) ________ climate is characterized by hot, dry summers and cool, moist winters.

melaa 57 1 Reply

6 years ago

A belt of coniferous forest, known as ________ forest, occurs in the high latitudes of the Northern ...

A belt of coniferous forest, known as ________ forest, occurs in the high latitudes of the Northern Hemisphere.

Iridium 115 1 Reply

6 years ago

________ is the perennially frozen subsurface that develops in boreal and arctic systems where the ...

________ is the perennially frozen subsurface that develops in boreal and arctic systems where the ground temperatures remain below 0°C for extended periods of time.

mat 45 1 Reply

6 years ago

Distribution patterns of biomes can be determined based almost entirely on:

Distribution patterns of biomes can be determined based almost entirely on
A) only mean annual temperature.
B) both mean annual temperature and precipitation.
C) the distribution of soils.
D) global weather patterns.

melaa 44 1 Reply

6 years ago

The broad categories of grasses, shrubs, and trees represent a diverse range of species and ...

The broad categories of grasses, shrubs, and trees represent a diverse range of species and characteristics, and they have fundamentally different patterns of
A) nutrient allocation and morphology.
B) carbon allocation and morphology.

mat 75 1 Reply

6 years ago

Which of the following allocates the greatest amount of biomass to photosynthetic tissue and the ...

Which of the following allocates the greatest amount of biomass to photosynthetic tissue and the least amount to supportive tissue?
A) trees
B) shrubs
C) lianas
D) grasses

Iridium 50 1 Reply

6 years ago

Which of the following is the predominant leaf form of environments where the growing season is very ...

Which of the following is the predominant leaf form of environments where the growing season is very short or where nutrient availability severely constrains photosynthesis and plant growth?
A) winter-deciduous leaves
B) drought-deciduous l

melaa 37 1 Reply

6 years ago

What kind of trees dominate in ecosystems characterized by warm, wet climates with no distinct ...

What kind of trees dominate in ecosystems characterized by warm, wet climates with no distinct seasonality?
A) broadleaf evergreen
B) drought-deciduous
C) winter-deciduous
D) needle-leaf evergreen

Iridium 62 1 Reply

6 years ago

Tropical forests make up 6 percent of total land mass but contain an estimated ________ of all ...

Tropical forests make up 6 percent of total land mass but contain an estimated ________ of all species on Earth.
A) 1 percent
B) 6 percent
C) 50 percent
D) 90 percent

melaa 81 1 Reply

6 years ago

The highest diversity of plant and animal life occurs in

The highest diversity of plant and animal life occurs in
A) tropical savannas.
B) tropical rain forests.
C) temperate deciduous forests.
D) boreal forests.

melaa 75 1 Reply

6 years ago

Plants that root and grow on other plants in the tropical rain forest are called

Plants that root and grow on other plants in the tropical rain forest are called
A) phreatophytes.
B) succulents.
C) epiphytes.
D) halophytes.

melaa 86 1 Reply

6 years ago

Deeply weathered soils, with no distinct horizons characteristic of the tropical rain forest, are:

Deeply weathered soils, with no distinct horizons characteristic of the tropical rain forest, are
A) mollisols.
B) andosols.
C) oxisols.
D) alfisols.

melaa 81 1 Reply

6 years ago

Decomposition rates in the tropical rain forest are:

Decomposition rates in the tropical rain forest are
A) slow due to inhibition of decomposition by moisture.
B) fast due to near optimal conditions for decomposers.
C) fast due to highly fertile soils.
D) slow due to stored soil o

mat 78 1 Reply

6 years ago

Which type of biome is depicted here?

Which type of biome is depicted here?
A) deciduous forest
B) coniferous forest
C) tropical forest
D) savanna

mat 132 1 Reply