Ecosystem Concepts and Processes

The video covers sustainability, photosynthesis, and respiration, explaining how ecosystems function. It discusses energy flow in food webs, ecological succession, and symbiotic relationships. The video also explores biomes, carrying capacity, and population dynamics, including growth strategies and demographic transitions.

What is the primary goal of sustainability?

• To reduce carbon emissions to zero

• To meet current needs without harming future generations

• To eliminate all forms of pollution

• To increase economic growth

How do plants obtain energy through photosynthesis?

• By consuming other organisms

• By breaking down complex carbohydrates

• By absorbing nutrients from the soil

• By converting atmospheric carbon into glucose

Which of the following is an abiotic component of an ecosystem?

• Frog

• Tree

• Rock

• Fish

What percentage of energy from the sun is typically captured by producers in a food web?

• 10%

• 25%

• 1%

• 50%

What is primary succession?

• The regrowth of a forest after a fire

• The establishment of life on newly formed volcanic islands

• The seasonal migration of animals

• The process of photosynthesis in plants

In a mutualistic relationship, how do the organisms involved interact?

• Both benefit

• One benefits, the other is harmed

• One benefits, the other is unaffected

• Both are harmed

Which biome is characterized by nutrient-poor soil due to high nutrient uptake by plants?

• Desert

• Tundra

• Temperate forest

• Tropical rainforest

What is the carrying capacity of an ecosystem?

• The amount of energy available to producers

• The total biomass of an ecosystem

• The number of individuals that can be supported in an area

• The maximum number of species that can exist globally

What is a characteristic of K-strategists?

• They reproduce early and have many offspring

• They reproduce late and have few, well-protected offspring

• They are typically small and have short lifespans

• They do not care for their young

What happens during the transitional stage of demographic transition?

• Both birth and death rates are low

• Death rates drop significantly while birth rates remain high

• Birth and death rates are both high

• Birth rates drop significantly while death rates remain high