In this ecosystem, oak trees have a biomass of 124,778 gm2
and create 78,871 kcalm2yr
of energy.
How much energy will the secondary consumer have?
(1 point)
Responses
12,477.8 gm2
12,477.8 gm2
1,247.78 gm2
1,247.78 gm2
788.71 kcalm2yr
788.71 kcalm2yr
78.871 kcalm2yr
78.871 kcalm2yr
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It is not possible to determine the energy of the secondary consumer without additional information about the trophic levels and energy transfer in the ecosystem.
Imagine a large tree in a rainforest. Which of the following is true about it?(1 point)
Responses
Primary consumers of this tree will need to consume many trees over their life times.
Primary consumers of this tree will need to consume many trees over their life times.
Primary consumers of this tree will need to consume many trees over their life times unless they have short lifespans.
Primary consumers of this tree will need to consume many trees over their life times unless they have short lifespans.
If the species of this tree becomes overpopulated, primary consumers will suffer.
If the species of this tree becomes overpopulated, primary consumers will suffer.
Many primary consumers can just consume that one tree for their entire lifetimes.
Many primary consumers can just consume that one tree for their entire lifetimes.
Many primary consumers can just consume that one tree for their entire lifetimes.
What is true about adaptation and speciation?(1 point)
Responses
Adaptation occurs frequently, while speciation occurs unusually.
Adaptation occurs frequently, while speciation occurs unusually.
Speciation consistently leads to adaptations.
Speciation consistently leads to adaptations.
Adaptations consistently lead to speciation.
Adaptations consistently lead to speciation.
Adaptations and speciation are both rarely observed.
Adaptations and speciation are both rarely observed.
Adaptations and speciation are both commonly observed. However, adaptation allows a species to survive in its environment and over time can lead to speciation, which is the creation of a new species.
Physical Science B Semester Exam
25 of 2925 of 29 Items
Question
Use the graph to answer the question.
A graph is shown with the x-axis labeled "Percentage of land under protection" going from 0 to 100 with 20 unit intervals. The y-axis is labeled "number of species" going from 0 to 100 with 20 unit intervals. A line is shown going from the bottom left of the graph to the top right, curving towards the top left as it does.
How would you communicate the correlation between the two variables?
(1 point)
Responses
As the number of species increases, the percentage of land under protection increases.
As the number of species increases, the percentage of land under protection increases.
As the percentage of land under protection decreases, the number of species increases.
As the percentage of land under protection decreases, the number of species increases.
As the number of species decreases, the percentage of land under protection decreases.
As the number of species decreases, the percentage of land under protection decreases.
As the percentage of land under protection increases, the number of species increases.
As the percentage of land under protection increases, the number of species increases.
As the percentage of land under protection increases, the number of species increases (positive correlation).
Physical Science B Semester Exam
26 of 2926 of 29 Items
Question
Simultaneous coevolution on Earth is a result of changes in one system affecting another. Identify one cause and a feedback response.(1 point)
Responses
Increased ozone protection from UV radiation allowed animal evolution.
Increased ozone protection from UV radiation allowed animal evolution.
Water condensed on the ground and cooled the Earth.
Water condensed on the ground and cooled the Earth.
Soils developed and allowed bacteria and microbes to grow.
Soils developed and allowed bacteria and microbes to grow.
Red iron oxide lines in rocks caused greater oxygen production.
Soils developed and allowed bacteria and microbes to grow (cause). In response, the bacteria and microbes contributed to the breakdown of rocks, releasing nutrients for plant growth and contributing to the further development of soils (feedback response).
Over millions of years, at a convergent boundary, rocks are pushed up against each other, creating a small set of hills. The hills are right on the ocean’s shoreline. The ocean water constantly beats on the rocks, taking small pieces of the rock back with it each time. The strong ocean winds also take away pieces of the rock constantly, carrying them into the ocean or other nearby areas. This causes the rock structure to have a unique, jagged, and beautiful shape.
Which two processes are described above?
(1 point)
Responses
tectonic uplift and weathering
tectonic uplift and weathering
erosion and weathering
erosion and weathering
volcanism and erosion
volcanism and erosion
tectonic uplift and erosion
tectonic uplift and erosion