Which was the primary challenge animals faced in adapting to life on land?

A) The presence of new predators
B) Being able to adapt to move on land
C) The need for more oxygen to do work
D) Finding a mate in the new environment
E) The desiccating effect of the atmosphere

Desiccating Effect

The process or effect of removing water from something, often leading to drying out or dehydration.

Primary Challenge

An initial test or encounter designed to assess the strength, capabilities, or viability of an entity or concept.

Adapting to Life

The process by which organisms adjust to changes in their environment in order to survive and reproduce.