Use the Following Description and Table to Answer the Question

question 16

Multiple Choice

Use the following description and table to answer the question.
Diatoms are encased in petri-plate-like cases (valves) made of translucent hydrated silica whose thickness can be varied. The material used to store excess calories can also be varied. At certain times, diatoms store excess calories in the form of the liquid polysaccharide, laminarin, and at other times as oil. The following are data concerning the density (specific gravity) of various components of diatoms, and of their environment.
Specific Gravities of Materials Relevant to Diatoms
$\begin{array}{|c|c|}\hline \text { Material } & \begin{array}{c}\text { Specific Gravity } \\\left(\mathrm{kg} / \mathrm{m}^{3}\right) \end{array} \\\hline \text { Pure water } & 1000 \\\hline \text { Seawater } & 1026 \\\hline \text { Hydrated silica } & 2250 \\\hline \text { Diquid laminarin } & 1500 \\\hline \text { Diatom oil } & 910\\\hline \end{array}$

Water's density and, consequently, its buoyancy decrease at warmer temperatures. Considering the impact of temperature, and the table above, in which environment should diatoms sinking be slowest?

• A) cold fresh water
• B) warm fresh water
• C) cold seawater
• D) warm seawater

Recognize the importance of versatility in policy practice opportunities.

Understand the procedural aspects of policy tasks and the importance of sequencing.

Understand the basics of formatting text in documents, including font changes, size adjustments, and color modifications.

Identify and use hyperlinks to navigate between documents and websites.

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Definitions:

Ecological Theory

A framework for understanding the complex interrelations between organisms and their environment, emphasizing reciprocal influences.

Environmental Factors

Aspects of the environment that can influence living organisms, including natural elements like climate and man-made changes, which can impact health, behaviors, and development.

Ethologist

A scientist who studies animal behavior in natural environments, focusing on instinctual or innate behaviors.

Well-Controlled Research Lab

A research setting where experiments are conducted with strict adherence to protocols to minimize variables and bias, ensuring reliable and valid results.