Traits Improve Survival Practice Test

A population of beetles lives on dark soil with the same predators and food supply for 6 months. Two inherited shell-color traits occur: dark shells and light shells. At the start, there are 200 dark-shelled beetles and 200 light-shelled beetles. After 6 months, 120 dark-shelled beetles and 40 light-shelled beetles are still alive. Based on this evidence, which statement about trait and survival is supported?

In the same desert habitat for 3 months (same temperature range and same predators), a lizard population has two inherited traits: light-colored skin and dark-colored skin. At the start, there are 100 light-skin lizards and 100 dark-skin lizards. After 3 months, 70 light-skin lizards and 35 dark-skin lizards remain. Which statement is supported by the evidence?