dfsdfgasdg Flashcards
(12 cards)
Would clear cutting massive expanses of forests affect the carbon cycle? If so, what aspec
Yes, because the ability to remove carbon from the abiotic reservoir would be hindered now
that the trees are gone and they are no longer performing photosynthesis.
True or false: Even though the open ocean has a low net primary productivity, it still
accounts for the majority of Earth’s total net primary productivity because of its sheer size.
If false, make it a correct statement.
True
List three uses for phosphorous in organisms
Its uses include: a component of teeth and bones, a component of nucleic acids, and a component of phospholipids.
The ____________ of ____________ releases __________________ ions to the soil.
weathering, rock, inorganic phosphate
In general, what would a human need to eat in order to get phosphorous?
Humans need to eat plants
True or false: Plants cannot absorb atmospheric nitrogen gas. As such, plants require
bacteria to convert atmospheric nitrogen to a form they can readily uptake. If false, make it a
correct statement.
True
Nitrogen is made available to plants by the action of soil ____________ in a process called
______________.
Bacteria, nitrogen fixation
What is the natural increase in a lake’s primary productivity over time called?
This is known as autrophication
List three sources of phosphate pollution
They are found in pesticides, fertilizers, and runoff from livestock feedlots
Which of the following explains why nitrate-heavy fertilizers are problematic?
It is easily washed out by rain or irrigation
The goal of developing and managing Earth’s natural resources so that current and future
generations can benefit from them is known as ____________.
sustainablity
You are discussing conservation with your neighbor. He tells you that saving biodiversity in polar regions is pointless because most biodiversity is found in the tropics. What would your response be? Do you agree or disagree?
