DO NOWEvery year, monarch butterflies from Canada and the United States
spend the winter in central Mexico. The dry and mild climate in Mexico allows the monarch butterflies to survive the winter.
One winter, a week of storms caused freezing temperatures and 43 cm of snow in Mexico. What was the most likely impact of these storms on the monarch butterflies?
A) Monarch butterflies died in large numbers.
B) Monarch butterflies immediately migrated back to the United States.
C) Monarch butterflies did not migrate from Canada and the United States the next year.
D) Monarch butterflies evolved several new adaptations to survive the winter in Mexico.
Explanation
A) Monarch butterflies died in large numbers.
Every living thing has a range of temperature they can survive in (Homeostasis). Above or below that temperature, they die.
Evolution takes time. Instinctual behavior (like migration) will not change that quickly.
Needs of Living Things
Objective:
1) To identify the basic needs of all living things.
2) To describe competition.
A. Source of Energy
Sunlight Primary source of energy Needed for photosynthesis
Food Made by producers Carbohydrates, Fats, Proteins
Other Chemical Energy Chemosynthesis
B. AIR
OXYGENPlants and animals need oxygenOxygen combines with food to give
energy
Carbon dioxideUsed by plants & bacteria to make food
Other gasesProvide elements necessary for life
C. Water
Makes up our cells
Transports materialsAround organismsAround Earth
Regulates temperatureHOMEOSTASIS
D. Space
Organisms need enough space to get their basic needsSunOxygenFood
Some organisms need shelter
What happens when there are not enough basic materials for living things to get what they
need to survive?
A. Interspecific Competition
Happens between different types of organisms
Food, Water, SpaceFightingWaiting your turnMarking your territory