Food chain
What is a producer in a food chain?
Producer is an organism that makes its own food using sunlight.For example,plants.
What is a food web?
A food web is made up of many food chains that are interwined ,each food chain on this web maybe share the same consumer and same producer.
The definition of water cycle
The water cycle is the continuous movement of water through the environment, including evaporation, condensation, and precipitation.
What did photosynthesis produced？
lucose and oxygen
This two species fight for the same resource,what is this relation?
Competition
Which organism is always at the beginning of a food chain?
producer
True or False
In a food web, each organism usually has only one food source.
true
What is it called when water changes from liquid to gas?
evaporation
What three things are needed for photosynthesis to happen?
Sunlight,water and carbon dioxide
A remora fish attaches to a shark to get a free ride and leftover food. The shark is not affected.
What type of relationship is this?
commensalism
In the food chain,grass-rabbit-snake-hawk
What is the thirdly trophic level in this food chain.
snake
In a food web, what can happen if an animal has no natural predators?
If some animals have no predators, it population will grow too much. This can trouble over hunting or overgrazing of its food sources, which can unbalance the entire ecosystem.
What happens during condensation?
Water vapor cools down and changes back into liquid, forming clouds.
In which part of the plant does photosynthesis mainly take place?
leaves.
A tapeworm lives inside a human and absorbs its nutrients. What kind of relationship is this?
What happens to energy as it moves up the food chain
Less energy is available at each level.Because through each levele heat will lost.
What might happen in a food web if some species increase too much?
If one species increases too much, it may overuse its food source
causing that species to decrease.
This can also affect predators and other organisms in this food web, possibly throwing the ecosystem out of balance.
What is the role of the sun in the water cycle
The sun provides energy that causes evaporation, starting the water cycle.
Describe how human activities affect the carbon cycle. (e.g., burning, deforestation)
Burning fossil fuels – This releases large amounts of CO₂ into the atmosphere.
Deforestation – Cutting down trees reduces the number of plants that can absorb CO₂ through photosynthesis.
These activities increase the amount of carbon dioxide in the air, contributing to climate change.
Compare mutualism and commensalism
Each make an example
Mutualism:Both species benefit
example:Bee &Flowers/wood cooper and tree
Commensalism:One benifit,the other neither helped or harmed.
example:Bird&tree(bird made nest in tree)
Why are there usually fewer top predators than producers in an ecosystem
Because energy decreases at each level in the food chain.Energy gradually decrease.There is not enough to support a huge number of top predators.
What can happen if a top predator is removed from a food web?
Without predator,the prey will increase vastly and eat too much food.This can affect other species and unblance the ecosystem.
How does water return to the Earth’s surface after it condenses into clouds?
Through precipitation, such as rain, snow, sleet, or hail.
Describe two ways carbon is transferred between land and ocean.
Atmospheric exchange
Sedimentation
In a forest, a bird eats insects off a deer’s back (helping both), a tick feeds on the deer’s blood (hurting the deer), and two birds fight over nesting space. Name each relationship.
birds&deer:mutualism
tick&deer:parasistism
two birds:competition