Question

1. what is the major difference between rays and skates?

• rays give birth to live offspring, while skates lay eggs
• rays lay eggs, while skates give birth to live offspring
• rays are endothermic, while skates are ectothermic
• rays have flattened bodies, while skates do not

Explanation:

Rays are viviparous, meaning they give birth to live young, while skates are oviparous, laying eggs often called "mermaid's purses." Both are ectothermic and have flattened bodies, so those options are incorrect.

Answer:

rays give birth to live offspring, while skates lay eggs