Untitled Flashcards Set

• Conditions in Water

Conditions on Land

Adaptations for Life on Land

Water has buoyancy. That is, it has an upward force that works against gravity.

• Air is less buoyant.

• Movement is against gravity.

Limbs develop and skeletal and muscular systems become stronger.

Oxygen is dissolved in water and must be removed by gills.

• Oxygen is more available in air than in water.

Lungs enable animals to get oxygen from air more efficiently.

Water holds heat, so the temperature of water does not change quickly.

• Temperature changes occur more rapidly in air.

• Temperatures vary between day and night.

Animals develop behaviors, such as migration, and physical adaptations that protect them from extreme temperatures.

Sound waves travel more quickly through water.

• A lateral line system cannot detect sound in air.

Animals develop ears that detect sound waves in the air.