Two Species of Salamanders Have Overlapping Territories,and They Successfully Mate

question 66

Multiple Choice

Two species of salamanders have overlapping territories,and they successfully mate and produce eggs.However,most of the eggs fail to hatch.Only 10% of them hatch,but the tadpoles are weak and are almost all killed by predators.The few tadpoles that exit the water have weak bones and soon die.This is an example of

• A) hybrid breakdown.
• B) gametic isolation.
• C) hybrid inviability.
• D) ecological isolation.
• E) hybrid infertility.

Comprehend how to format and select elements in PivotCharts and PivotTables for customization.

Understand the process of refreshing PivotTable data and changing the data source.

Identify how to create and utilize PivotCharts effectively.

Know how to use Excel functions and features to retrieve and summarize data in PivotTables.

---

Definitions:

Marginal Cost

The expense associated with manufacturing an extra unit of a product or service.

Variable Cost

Variable cost pertains to a cost that changes in proportion with the level of activity or volume of production in a company.

Average Fixed Cost

The fixed costs of production divided by the quantity of output produced, which decreases as production increases.

Law Of Diminishing Returns

An economic principle stating that if one factor of production is increased while others remain constant, the overall returns will eventually decrease after a certain point.