The Amphibians' Unique Contribution to the Evolution of Land Vertebrates

question 55

Multiple Choice

The amphibians' unique contribution to the evolution of land vertebrates was

• A)respiration by gills.
• B)respiration through the skin.
• C)separation of lung/gill and systemic (body)circulation.
• D)development of the tail for propulsion.
• E)the leathery waterproof egg shell.

---

Definitions:

Sales Commissions

Payments made to sales employees or agents based on the value or volume of sales they generate.

Selling Expenses

Incurred costs associated with the marketing and sale of a product or service, such as advertising, sales commissions, and promotional materials.

Advertising Expenses

Costs incurred in promoting products or services to potential customers through various media channels.

Budgeted Production

An estimate of the quantity of goods or services that a company plans to produce within a specified period.