Energy Pyramid
What is the 10% Rule in energy pyramids?
Only 10% of the energy is passed to the next trophic level; the rest is lost.
What is a food web?
What process releases carbon into the atmosphere?
Combustion.
What is a major advantage of asexual reproduction?
It is faster and requires less energy.
What is natural selection?
A mechanism of evolution where better-adapted organisms survive and reproduce.
If primary producers have 100,000 kcal of energy, how much energy is available for primary consumers?
10,000 kcal.
Why is each living thing in an ecosystem part of multiple food chains?
Answer: Because they can have various food sources.
What is the main purpose of photosynthesis in the carbon cycle?
How does natural selection create variation in populations?
It promotes traits that help organisms adapt to their environment.
Which consumer receives the most energy captured by producers: spider, owl, snake, butterfly, or eagle?
Owl
How do food webs demonstrate the flow of energy and nutrients?
What is ammonification?
The process where decomposers convert organic matter into ammonium.
What type of reproduction do aphids use in summer?
Asexual reproduction
What is the main result of natural selection?
Increased survival and reproduction of well-adapted individuals.
What does it mean for organisms to occupy multiple trophic levels?
Some organisms can feed on and belong to more than one trophic level.
What are primary producers in a food web?
Organisms that produce energy through photosynthesis, like plants.
What is denitrification?
The process where bacteria convert nitrates in the soil into nitrogen gas.
What is the main advantage of sexual reproduction?
It increases genetic variation in a population.
What is artificial selection?
Humans choosing desirable traits in plants and animals.
How does energy flow in an energy pyramid?
Energy is transferred from one level to the next, decreasing as it moves up.
Give an example of how a food chain can affect a food web.
Give an example of how a food chain can affect a food web.
Describe nitrogen fixation in simple terms
It breaks apart nitrogen molecules in the atmosphere to combine with other atoms.
500 Points: Provide an example of an organism that reproduces both sexually and asexually.
How do organisms change over time due to natural selection?
They adapt to their environments, leading to changes in species.