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Biology
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Jan 9, 2024
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Question 4 (Worth 3 points) (02.05 MC) Which of the following is an example of how a biotic factor can affect the population dynamics in an ecosystem? O Lack of water during a drought causes many of the individuals in a population to die. O Seasonal temperature changes cause a species to migrate between two ecosystems. O Excessive rain and flooding cause organisms in an area to relocate. @® The population of a predator increases following an increase in the population of its prey. Points earned on this question: 3
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Related Questions
Question 3 (Mandatory) (6 points)
You observe a newly-abandoned farm field. Make a prediction of how the field will change at the population, community,
and ecosystem levels as it moves from an early successional community to a late successional community.
Organize your answer like this:
Population Prediction:
Community Prediction:
Ecosystem Prediction:
Z
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Question
A
В
C
D
Which of the graphs is the most appropriate way to visualize the data? Match the
graph to the data descriptions.
1. Percentage of incoming first year
students coming from various high
schools
A
2. Plant growth in different fertilizers
В
3. Lake pH measured over time
4. The relationship between cat
weight and body length
C
arrow_forward
Question 13
Saved
4) Listen ►
After the inflection point on the logistic growth curve:
The population size continues to increase.
The population growth rate starts to decrease.
Environmental resources start to impact the size and growth rate of the
populations.
Two of the above
All of the above
None of the above
arrow_forward
Question 14
Not yet answered
Marked out of 1.00
Alberta has a lot of natural gas, coal, and oil below its
surface because it was once the bed of an inland sea.
The materials below the surface of this province could
be classified as a:
Select one:
a. carbon sink
b. carbon source
O
c. rapid carbon cycler
O
arrow_forward
Question 1
For an individual, one major benefit of foraging in large groups is that they are more likely to
O avoid disease outbreaks
O acquire a larger share of food
find food when it is rare
O conserve food resources longer
荷
NEW
arrow_forward
Question 10
You are studying the population size of a plant species in a large grassland area.
The plants are evenly distributed across the area. Which population estimation
technique should use?
you
O Census
O Volume-based
O Mark-recapture
O Area-based
O Line-transect
< Previous
13
Next-
arrow_forward
Question 6
arrow_forward
Question 1: In the land between the lakes, Elk and Bison Prairie, we currently have 125 bison and 15 elk. These species are known to compete for some but not all of their resources. We are able to determine that the carrying capacity of the bison K1 is 200 and that the alpha (competition coefficient) is 4. The carrying capacity for Elk (K2) is 100 and the beta (competition coefficient) is 1.
Part a) At what population size of elk will the isocline of the bison intersect (K1/alpha)?
Round up to the nearest whole number
arrow_forward
Question 7
What typically occurs once a population reaches a carrying capacity?
O the population will remain constant at that number
O the population will begin to decrease until there are few individuals remaining
O the population will fluctuate around the carrying capacity
O the population will continue growing exponentially
A Moving to another question will save this response.
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Question 31
In the Lotka-Volterra model for predator-prey interactions, which equation
represents a decline in the predator population?
OrN CNP or P m/ac
OrN r/c
O acNP
arrow_forward
QUESTION 3
(a) What is resource partitioning?
(b) Fully describe an excellent example of resource partitioning.
Samsung Triple Camera
Shot with my Galaxy A03s
arrow_forward
Question 11
E4) Listen
Make the contrasts asked for below between more developed nations and less
developed nations.
About what percent of the world's resources are used by the more developed
nations?
arrow_forward
QUESTION 71
In optimal foraging
O A. animals always hunt in social groups.
OB.
an animal tends to eat the food that provides the most energy for the least amount of energy spent acquiring it.
OC.
animals can rarely afford to be selective.
OD.
groups of five to seven animals are most successful.
O E animals are typically most successful when they hunt alone.
arrow_forward
0/1 pts
Incorrect
Question 10
Rain falls on a fertilized agricultural field after a farmer has harvested the crop. Which
biogeochemical cycles are involved when runoff from the field flows into a nearby
stream?
water and nitrogen cycles
carbon and water cycles
water, carbon, nitrogen, and phosphorus cycles
water, nitrogen, and phosphorus cycles
arrow_forward
Question 8
If the primary producers in a five-level trophic pyramid produce 100,000 calo-
ries, how much of that energy will reach the apex predator?
0:00/0:15
A
B
C «»
С
1 calorie
10 calories
10,000 calories
Speed: 1x
polar
bear
seal
big fish and squid
small fish
Algae & bacteria
| ✿ ❤
Paused
arrow_forward
Question 12 (Mandatory) (2 points) ✓ Saved
You collect the following tree species data from the TC3 wood lot:
Species
Species
Community
A
B
Species
C
Species
D
Species
E
1
20
20
20
20
20
2
70
20
6
2
2
CHOOSE ALL THE CORRECT STATEMENTS FROM THE FOLLOWING LIST.
Diversity is higher in plot 2
Richness is higher in plot 1
☑Community 1 is probably more resistant to disturbance.
Community 2 is probably more resistant to disturbance.
Diversity is higher in plot 1
Question 13 (Mandatory) (5 points)
L
✓ Saved
Classify the following factors as either density dependent or density independent.
arrow_forward
Need help with 1 and 2 questions:
1.) Two different populations of commander butterfly were studied over a period of two years. The following results were obtained.
Population size of commander butterflies
Population| Original size| Final size 1 2436 2873
2 2185. 2649
Which of the following concepts would best compare the change in population size of the two populations?
A.) Growth rate (gr )
B.) Biotic potential (r)
C.) Density (Dp )
D.) Per capita growth rate (cgr )
2.) When population density reaches the carrying capacity of the environment, the death rate in the population becomes
A.) less than the birth rate
B.) equal to the birth rate
C.) more than the emigration rate
D.) more than the immigration rate
arrow_forward
Pls answer this for me. thank you so much
arrow_forward
O False
Question 10
Richer countries have dumped waste, including toxic waste into landfills in poorer countries.
True
False
arrow_forward
What do I need to use for the other data to complete this graph?
arrow_forward
Question 48
Define ecological efficiency, including ranges of ecological efficiencies in nature.
The proportion of energy in the biomass of the primary producers of an ecosystem, ranging from 50-80%.
The percent transfer of energy from the top of the food web to the bottom, ranging from 1-3%.
The percentage of energy in the biomass of herivores transferred to decomposers, ranging from 20-50%.
The percentage of energy in the biomass at a lower trophic level that is transferred to the next higher
trophic level, ranging from 5 to 20%.
arrow_forward
Question 4
Prebiotic foods are rich in fiber, and when eaten, they help to supply gut beneficial bacteria with food. If a person starting eating a high prebiotic diet, what would happen to the carrying capacity and populations of gut bacteria?
O the carrying capacity would increase and the populations would decline
O the carrying capacity would increase and the populations would increase
O the carrying capacity would decrease and the populations would increase
O the carrying capacity would decrease and the populations would decline
A Moving to another question will save this response.
%23
3
5
6
7
00
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Partial
0.75 /1 pts
Question 8
Where is carbon stored on Earth? Check all that apply.
rocks and sediments
fossil fuels
atmosphere
V living organisms
arrow_forward
PLEASE HELP!
Question: Benicia High’s school garden the carrying capacity for blue belly lizards is 300. If the current population size is 320 and the rmax is calculated to be 0.42. How many lizards will be in the population after 1 year? (show work)
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Question 10
In a type 3 survivorship curve, which group has the highest mortality?
O very old
O middle age
O all groups have the same mortality rates
O very young
A Moving to another question will save this response.
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Question 6 (1 point)
7000
Total Western Bean Cutworm Moth
Captures By Week
5
6000
5000
4000
3000
9
2000
1000
1
0
1
2
3
4
5
6
7 8
14
Week
nformation
What question would be difficult to answer from this graph?
What insect was being collected?
What season were these collections performed in?
Which year experienced the highest volume of collections in week 3?
Which week experienced the highest collection volume?
2015
2014
2013
2012
2011
2010
arrow_forward
Pleas help with questions 4,5, and 6!! ASAP
arrow_forward
Good day can you please help me with the answers for impact on:
Demand
Supply
Price
Quantity
I have also screenshot the option I have to chose from.
arrow_forward
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- Question 14 Not yet answered Marked out of 1.00 Alberta has a lot of natural gas, coal, and oil below its surface because it was once the bed of an inland sea. The materials below the surface of this province could be classified as a: Select one: a. carbon sink b. carbon source O c. rapid carbon cycler Oarrow_forwardQuestion 1 For an individual, one major benefit of foraging in large groups is that they are more likely to O avoid disease outbreaks O acquire a larger share of food find food when it is rare O conserve food resources longer 荷 NEWarrow_forwardQuestion 10 You are studying the population size of a plant species in a large grassland area. The plants are evenly distributed across the area. Which population estimation technique should use? you O Census O Volume-based O Mark-recapture O Area-based O Line-transect < Previous 13 Next-arrow_forward
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