The Symbol for a Certain Isotope of Strontium Is

question 45

Multiple Choice

The symbol for a certain isotope of strontium is
Sr.What is the mass number of this isotope?

• A)38
• B)52
• C)88
• D)90
• E)128

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Definitions:

Camouflaged

Describes an organism or object that is disguised by blending in with its surroundings to avoid detection.

Keystone Species

A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

Symbionts

The partners in a symbiotic relationship.

Secondary Succession

Secondary succession is the ecological process of change and development in an area where an ecosystem has been previously established but has then been disrupted.