During Which Period Did the Following Events Occur: Recovery of the Biota

question 6

Multiple Choice

During which period did the following events occur: recovery of the biota after a major mass extinction; increase in the species richness of invertebrate groups; appearance of the first turtles and frogs; and beginnings of a large radiation of reptiles?

• A) Permian
• B) Cambrian
• C) Jurassic
• D) Cretaceous
• E) Triassic

---

Definitions:

Sodium Excretion

The process by which the kidneys remove excess sodium ions from the body to maintain fluid and electrolyte balance.

Internal Fertilization

The process by which sperm fertilizes an egg inside the body of an organism, common in terrestrial animals.

External Fertilization

The process in which gametes meet outside the body, typically when females release eggs and males release sperm into the surrounding water; occurs in most aquatic invertebrates, bony fishes, and amphibians. Compare with internal fertilization.

Protective Environment

A setting or condition designed to prevent harm or damage, typically used in the context of safeguarding human health or ecosystems.