What Is the Main Way That Sharks and Rays Deal

question 50

Multiple Choice

What is the main way that sharks and rays deal with the osmotic stress of living in seawater?

• A) by active transport of ions out of the body by chloride cells
• B) by maintaining high levels of urea and trimethylamine oxide in body fluids
• C) by active transport of ions into the body through the gills
• D) by excreting nitrogenous wastes through their kidneys as urea

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Definitions:

Breast-Feeding

The act of feeding a baby with milk directly from the breast, providing nutritional and immune support to the infant.

Immunization

The process by which an individual's immune system becomes fortified against an agent known as the immunogen.

Low Birth Weight

A term used to describe babies born weighing less than 2,500 grams (5 pounds, 8 ounces) which can lead to various health issues.

Percentage

A rate, number, or amount in each hundred, used to describe proportions and comparisons between quantities.