Some kinds of birds migrate to the warmer places in the winter

The wings of a butterfly look like snake heads

Octopus changes its own colors to blend in with the sand

Skunk releases and sprays odor at predator

Some animals pretend to be dead to protect themselves from predators

Frogs use webbed feet to swim in water

Snake produces venom

What is a physical or behavioral trait that serves a specific function and improves an organism's fitness or survival?

Migration, hibernation and nocturnal behavior are all

All of the following are structural adaptations except:

What is an adaptation?

Plants grow towards sunlight to help them acquire as much sunlight as possible.

When threatened, some animals make warning sounds to help other animals escape a predator.

When an environment changes over time and a species adapts or changes to be better able to live and reproduce is called...

During natural selection, an organism with successful traits will pass these traits to its __________________.

A brown mouse lives in the mountains. It blends with the soil. Predators cannot see it. Some of its babies are born with grey fur. Predators easily see the grey mice and eat them.

Then, a volcano erupts and changes the environment. The ground is now a black or gray color.

After natural selection, which mouse will there be more of? Why?

A variation is . . .

Any change in the sequence of DNA is a