The Next Few Questions Refer to the Following Description and Table

question 43

Multiple Choice

The next few questions refer to the following description and Table 28.1.
Diatoms are encased in Petri-platelike 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.
Table 28.1 Specific Gravities of Materials Relevant to Diatoms

-Water's density and, consequently, its buoyancy decrease at warmer temperatures. Based on this consideration and using data from Table 28.1, at which time of year should one expect diatoms to be storing excess calories mostly as oil?

• A) mid-winter
• B) early spring
• C) late summer
• D) late fall

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Definitions:

Production Facility

A location or establishment where goods are manufactured or assembled.

Hazardous Wastes

Hazardous Wastes are materials that pose considerable harm to health or the environment, requiring special handling, treatment, and disposal.

Proximity To Raw Materials

The strategic advantage gained by being located near the supply of raw materials, reducing transportation costs and time.

Physical Characteristics

The tangible attributes or features of an object, person, or location that can be observed with the senses.