Environmental and Conservation Biology

In the past, preservation efforts usually focused on single species, such as polar bears or Florida ...

In the past, preservation efforts usually focused on single species, such as polar bears or Florida ...

In the past, preservation efforts usually focused on single species, such as polar bears or Florida panthers. However, current preservation efforts generally focus on whole communities and ecosystems. One approach to the preservation of biodiversity

monkeyr159   29024   1 Reply

bio student

Introduction to Ecology and the Biosphere (2)

Introduction to Ecology and the Biosphere (2)

1. Briefly explain the six different levels of ecology.

2. One of the most influential individuals of the environmental movement was Rachel Carson. What was her contribution to ecology and environmental issues?

3. Abiotic factor

Ashmo   28027   1 Reply

bio_man

Ecology

Ecology

To measure the population density of chipmunks occupying a particular park, you sample several quadrats and capture 50 chipmunks. You mark each of them with a small dot of red paint on their backs, and then release them. The next day, another 50 chip

NAZ   21790   2 Replies

bio_man

Compare cohort and static life tables. What are the main assumptions of each? In

Compare cohort and static life tables. What are the main assumptions of each? In

Compare cohort and static life tables. What are the main assumptions of each? In what situations or for what organisms would it be practical to use either?

colleen   19304   1 Reply

duddy

What is the carrying capacity for moose in the simulation model of Isle Royale, prior to any change

What is the carrying capacity for moose in the simulation model of Isle Royale, prior to any change

 What is the carrying capacity for moose in the simulation model of Isle Royale, prior to any changes in the weather?

Suppose the rate of plant growth on Isle Royale supported an equilibrium moose population of 300 moose. In this scenario,

jdelato5   18577   2 Replies

boobookeys

Isle Royale worksheet help (ecology)

Isle Royale worksheet help (ecology)

1. What is the carrying capacity for moose in the simulation model of Isle Royale, prior to any changes in the weather?


2. When the wolves arrived on Isle Royale, what did they find?
a. A small healthy moose population.
b.

12345

bonny061212   18215   64 Replies

Seher Adnan

Differentiate between environmental science and environmentalism. Define each te

Differentiate between environmental science and environmentalism. Define each te

Differentiate between environmental science and environmentalism. Define each term and explain how they are similar and how they differ. 

colleen   16768   2 Replies

Bryson fluty

ecology-evolution for ecology (multiply choice questions)

ecology-evolution for ecology (multiply choice questions)

1. Which statement best describes the relationship between the speed of ecological processes versus evolutionary processes?
a. Evolutionary processes are much slower than ecological processes.
b. Ecological processes are much slower than ev

bonny061212   16154   10 Replies

doubleu

What is the single greatest threat to biodiversity?

What is the single greatest threat to biodiversity?

What is the single greatest threat to biodiversity?

A) overharvesting of commercially important species
B) disruption of trophic relationships as more and more prey species become extinct
C) habitat alteration, fragmentation, and

ppk   15792   4 Replies

bio_man

How does poverty and affluence affect the environment?

How does poverty and affluence affect the environment?

How does poverty and affluence affect the environment?

Jermain_   14943   4 Replies

javeria

ecology keystone predator questions!

ecology keystone predator questions!

1. Which species do Whelk feed on in the Keystone Predator simulation model? (Check all that apply.)
a. Acorn Barnacle
b.Black Pine
c. Chiton
d. Coral Weed
e. Goose Neck Barnacle
f. Nori Seaweed
g. Starfish

bonny061212   13387   1 Reply

Zink

Differentiate between exponential and logistic growth curves. Give examples of t

Differentiate between exponential and logistic growth curves. Give examples of t

Differentiate between exponential and logistic growth curves. Give examples of the conditions under which each would occur. 

ppk   11999   1 Reply

how_mendel

Compare and contrast the philosophies of John Muir and Gifford Pinchot.

Compare and contrast the philosophies of John Muir and Gifford Pinchot.

Compare and contrast the philosophies of John Muir and Gifford Pinchot. 

colleen   11495   1 Reply

star

Questions regarding competition?

Questions regarding competition?

Hi everyone! I was confused on question 12, 22, and 25 from the photos I've attached. For #25, i think one of the answers is D because in experiment 3 there is evidence of competition from the graph, but it is a mark all that apply answer so mor

Fightboy   10787   N/A

Fightboy

Which of the following is not an aerosol?

Which of the following is not an aerosol?

Which of the following is not an aerosol?
A) Smoke
B) Fog/Smog
C) Dust
D) Pollen
E) Methane

barry   10313   2 Replies

barry

List the three major trophic levels in a food web. What types of organisms are f

List the three major trophic levels in a food web. What types of organisms are f

List the three major trophic levels in a food web. What types of organisms are found in each level? Where are the autotrophs and heterotrophs found? Discuss the significance of each level for the integral functioning of the food web. 

ppk   10100   1 Reply

how_mendel

What is a demographic transition? What are its four stages?

What is a demographic transition? What are its four stages?

What is a demographic transition? What are its four stages? State why each stage is important and what the consequence is for population growth. Do all countries go through the demographic transition?

Jermain_   10094   3 Replies

biolove

What are the relative advantages and disadvantages of being an herbivore, detrit

What are the relative advantages and disadvantages of being an herbivore, detrit

What are the relative advantages and disadvantages of being an herbivore, detritivore, or carnivore? What kinds of organisms were left out of our discussions of herbivores, detritivores, and carnivores? Where do parasites fit? Where does Homo sapiens

colleen   9885   1 Reply

robertling

Genetic drift, Founder effect, Bottleneck Effect?

Genetic drift, Founder effect, Bottleneck Effect?

What is the difference between genetic drift, founder effect, and bottleneck effect?

flyfreegh   9739   1 Reply

tonio613

The biosphere is best defined as ________.

The biosphere is best defined as ________.

The biosphere is best defined as ________.
A) a regional grouping of plants, animals and abiotic factors
B) all Earth's organisms and the non-living environment with which they interact
C) all Earth's organisms and their phys

barry   9635   2 Replies

barry

To date, which biomes have been the most heavily affected by humans? Which seem

To date, which biomes have been the most heavily affected by humans? Which seem

To date, which biomes have been the most heavily affected by humans? Which seem to be the most lightly affected? How would you assess human impact? How might these patterns change during this century?

ppk   9453   1 Reply

how_mendel

Compare and give several examples of biotic and abiotic factors in a forest ecosystem?

Compare and give several examples of biotic and abiotic factors in a forest ecosystem?

The nonliving parts of an organism's environment are the abiotic factors. Examples of abiotic factors include air currents, temperature, moisture, light and soil. These factors have obvious effects on living things and often determine which species s

LES   9357   1 Reply

Julia Jeffrey

Discuss the three major eras of environmental law in the United States. What key

Discuss the three major eras of environmental law in the United States. What key

Discuss the three major eras of environmental law in the United States. What key events sparked each era, and/or resulted from each one?   

ppk   9302   2 Replies

Tetsu

Photovoltaic (PV) technology is best described as ________.

Photovoltaic (PV) technology is best described as ________.

Photovoltaic (PV) technology is best described as ________.
A) passive solar technology
B) using sun's energy to warm a room without mechanical devices
C) using sunlight to generate electricity
D) trapping sun's heat and

barry   9278   2 Replies

barry

An important characteristic of aquatic dead zones is ________.

An important characteristic of aquatic dead zones is ________.

An important characteristic of aquatic dead zones is ________.
A) a high concentration of organisms resulting in extreme competition and finally the death of most
B) a low concentration of keystone species
C) a high concentration of ur

barry   9183   2 Replies

barry

What is a critical load?

What is a critical load?

What is a critical load?

A) the level of a given toxin in an ecosystem that is lethal to 50% of the species present
B) the number of predators an ecosystem can support that effectively culls prey populations to healthy levels
C)

ppk   9132   2 Replies

bio_man

Discuss how the concept of time applies to ecological situations and evolutionary changes.

Discuss how the concept of time applies to ecological situations and evolutionary changes.

Discuss how the concept of time applies to ecological situations and evolutionary changes. Do ecological time and evolutionary time overlap? If so, what are some examples? 

Ashmo   9016   2 Replies

bio_man

Express one billion (1,000,000,000) in scientific notation.

Express one billion (1,000,000,000) in scientific notation.

Express one billion (1,000,000,000) in scientific notation.

colleen   8910   3 Replies

colleen

Whats the difference between environmental science and biology?

Whats the difference between environmental science and biology?

Or are they the same? I need to do summary on articles about environmental science but idk what actually classifies something as environmental science.

buffboyali   8908   4 Replies

Datkidjoven

Biological vs Phylogenetic species concept

Biological vs Phylogenetic species concept

Which definition of species would yield a greater worldwide estimate of species diversity and why?

Polymorphism   8769   3 Replies

bio_man

What makes up an ecological community?

What makes up an ecological community?

What makes up an ecological community?
A) Species that use the same resources
B) All the plants, animals and organisms interacting in a specific area
C) Different species of the same type of animal within a specific area
D) All th

barry   8683   2 Replies

barry

The place where an organism lives is its ________.

The place where an organism lives is its ________.

The place where an organism lives is its ________.
A) biome
B) community
C) ecosystem
D) niche
E) habitat

barry   8604   2 Replies

barry

The primary source of the acidity in acid rain are the gases ________.

The primary source of the acidity in acid rain are the gases ________.

The primary source of the acidity in acid rain are the gases ________.
A) NOx and N2O
B) O3 and SO2
C) SO2 and NOx
D) H2SO4 and NO
E) O3 and VOCs

barry   8552   3 Replies

barry

What is the primary structural constituent in plant tissues?

What is the primary structural constituent in plant tissues?

What is the primary structural constituent in plant tissues?
A) Chlorophyll
B) Starch
C) Cellulose
D) Enzymes
E) Protein

barry   8409   2 Replies

barry

An S-shaped population growth curve best describes ________.

An S-shaped population growth curve best describes ________.

An S-shaped population growth curve best describes ________.
A) logistic growth
B) exponential growth
C) unlimited growth
D) rapid and steady rate growth
E) slow and constantly changing growth

barry   8324   3 Replies

barry

There are three main disposal methods for hazardous waste. One is landfills. Des

There are three main disposal methods for hazardous waste. One is landfills. Des

There are three main disposal methods for hazardous waste. One is landfills. Describe how hazardous waste landfills differ from ordinary sanitary landfills. Briefly discuss the other two ways that hazardous waste is contained. 

ppk   8253   1 Reply

star

Hydroelectric plant using impoundments generate electricity when water is releas

Hydroelectric plant using impoundments generate electricity when water is releas

Hydroelectric plant using impoundments generate electricity when water is released from a ________.
A) turbine
B) generator
C) dam
D) pipe
E) powerhouse

barry   8226   2 Replies

barry

Assuming no migration, birth rate minus death rate is equal to ________.

Assuming no migration, birth rate minus death rate is equal to ________.

Assuming no migration, birth rate minus death rate is equal to ________.
A) the increase or decrease in different populations
B) the proportions of fertile women in different populations
C) the cause of deaths in the population
D)

barry   8203   2 Replies

barry

When populations approach their carrying capacity, their resources ________.

When populations approach their carrying capacity, their resources ________.

When populations approach their carrying capacity, their resources ________.
A) increase because populations are decreasing
B) are not a concern as they are usually infinite in supply
C) become more scarce as growth rate becomes zero

barry   8162   2 Replies

barry

The majority of Earth's fresh water exists ________.

The majority of Earth's fresh water exists ________.

The majority of Earth's fresh water exists ________.
A) in the form of ice
B) in freshwater lakes, streams, and rivers
C) in groundwater
D) in the atmosphere
E) in the oceans

barry   8070   2 Replies

barry