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A cactus has many adaptations in order to survive in its desert environment. – Identify two adaptations of a cactus that help it survive best in a desert environment, rather than in a different type of environment. 130. 120. 60. 70. 30. 50. 40. 10. 140. 8. 7. 6. 5. 4. 9. 3. 2. 0.

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  1. A cactus has many adaptations in order to survive in its desert environment. – Identify two adaptations of a cactus that help it survive best in a desert environment, rather than in a different type of environment. 130 120 60 70 30 50 40 10 140 8 7 6 5 4 9 3 2 0 180 80 20 160 90 150 170 100 110 1 This screen will disappear in 3 minutes. Seconds Remaining.

  2. Some cactus plants have needles. Needles keep the cactus from losing a lot of water through transpiration from the wide surface of a larger leaf. A cactus also has a root system composed of deep and shallow roots. The deep roots obtain water when there has not been rain, and the shallow roots collect water at the surface when it does rain.

  3. The African elephant has many adaptations that help it to survive in the tropical forest and grassland environments that it lives in.– Identify two physical adaptations of the elephant that help it to survive in Africa.– Explain how the two adaptations you selected help it to survive in Africa. 130 120 60 70 30 50 40 10 140 8 7 6 5 4 9 3 2 0 180 80 20 160 90 150 170 100 110 1 This screen will disappear in 3 minutes. Seconds Remaining.

  4. An elephant has a long, flexible trunk that is used to help the elephant obtain food. The trunk can reach high branches and pull them down so that the elephant can eat the leaves from the branches.An elephant also has large ears that help to keep the elephant cool. The large surface area of the ears, combined with the numerous blood vessels in the ear, allow the elephant to release body heat from its ears to cool its body.

  5. Explain how migration and hibernation enable certain animals to survive in an environment that changes drastically during the year. 130 120 60 70 30 50 40 10 140 8 7 6 5 4 9 3 2 0 180 80 20 160 90 150 170 100 110 1 This screen will disappear in 3 minutes. Seconds Remaining.

  6. Some animals migrate when their environment changes and becomes too cold for them to survive. This allows them to escape the cold and temporarily live in a warmer place where they are better suited to survive. Some animals hibernate when environmental conditions become too cold. They live in a sleep-like state in a den that is protected from the cold until warmer temperatures return.

  7. The hard shell of some mollusks enables them to survive in tidal pools. Tidal pools are found along rocky coasts. In tidal pools, water from high tides can collect in depressions in the rocks when the tide recedes, forming pools of water. These tidal pools can empty during low tides.– Describe two ways that the shells of a mollusk allow it to survive in a tidal pool. 130 120 60 70 30 50 40 10 140 8 7 6 5 4 9 3 2 0 180 80 20 160 90 150 170 100 110 1 This screen will disappear in 3 minutes. Seconds Remaining.

  8. The water level in tidal pools changes from high tide to low tide. At times, the mollusks are exposed to air. During these periods, the shells protect them from predators and keep them from drying out.

  9. What are some behavioral adaptations to changes in the environment?   130 120 60 70 40 50 30 10 140 8 7 6 5 4 9 3 2 0 180 80 20 160 90 150 170 100 110 1 This screen will disappear in 3 minutes. Seconds Remaining.

  10. What are some behavioral adaptations to changes in the environment?   • Migration • Hibernation • Dormancy

  11. Describe MIGRATION 130 120 60 70 40 50 30 10 140 8 7 6 5 4 9 3 2 0 180 80 20 160 90 150 170 100 110 1 This screen will disappear in 3 minutes. Seconds Remaining.

  12. Describe MIGRATION • When animals move from one place to another as a result of temperature changes • Animals migrate for different reasons: • to find a better climate (better weather) • to find better food • to find a safe place to live • to find a safe place to raise their young

  13. Describe HIBERNATION 130 120 60 70 40 50 30 10 140 8 7 6 5 4 9 3 2 0 180 80 20 160 90 150 170 100 110 1 This screen will disappear in 3 minutes. Seconds Remaining.

  14. Describe HIBERNATION • the inactive periods of animals in the cold temperatures of winter 

  15. Describe DORMANCY 130 120 60 70 40 50 30 10 140 8 7 6 5 4 9 3 2 0 180 80 20 160 90 150 170 100 110 1 This screen will disappear in 3 minutes. Seconds Remaining.

  16. Describe DORMANCY • a period of inactivity  • Adverse conditions of weather may slow the growth and development of plants and animals (dormancy), whereas optimal weather conditions may accelerate growth and development.   • Many familiar trees produce new leaves in the spring and lose them in the fall due to seasonal changes in temperature and light.  Trees that lose their leaves are dormant in winter. 

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