Which feature is an example of physiological adaptation? a. beak sizes of birds b. octopuses’ ability to squirt ink c. communicating in sign language d. school of fish in the sea e. length of animals’ ears

Which situation is the best example of opportunity cost? a country chooses to produce bananas instead of wheat. a country chooses to invest in manufacturing and agriculture. a country chooses to specialize in producing paper products. a country chooses to export all of its products.

What is the most important thing to remember in relation to wild animals?

During which phase is the least percentage of the light that hits the moon visible from earth? new moon waxing gibbous waning crescent full moon