Food chains
What is a food chain?
it is the transfer of energy from one organism to another
What is a food web?
it shows that a consumer participates in different food chains
Living things obtain the food from:
they obtain energy from food
natural disasters and human action
What is a toxin?
it is a poisonous substance that can harm or kill living things
What is a producer?
it is a living thing that produces its own food (plants)
In every ecosystem, there are PREDATORS and ...
PREYS
Mention the first origin of energy:
the sun
What is an ecosystem?
it's all the living and non living things in a specific area
Which is the first contact of toxins with the living things?
the plants ( soil or water)
Another name for primary consumer:
herbivores
From a lion, rat, vulture, zebra and leopard, which are the predators and which are the pray?
predators: lion, vulture, leopard
prays: rat and zebra
How much energy is passed from plants to herbivores?
only the 10 %
Mention 3 natural disasters that affect ecosystems:
1. floods
2. fires
3. droughts
4. hurricanes
What is a fertilizer?
it is a pesticide people use to fumigate crops
Another name for secondary consumers:
carnivores
If a chimpanzee eats fruits, eggs, insects, and meat, it is considered:
omnivore
What do decomposers eat?
They eat fungi, bacteria and dead animals and plants
What happens when there are new species in an ecosystem?
they compete for food and shelter
What happens during bioaccumulation?
lots of toxins or chemicals are accumulated in the body of the primary, secondary and terciary consumers
What is an omnivore?
it is a living thing that eats both plants and animals
Is it true that all humans are considered Omnivores? why? why not?
Not all... many people are considred vegetarians, they don't eat animal products.
Where does energy go when living things die?
How does a kind of disease affect an ecosystem?
fewer plants will reproduce and consumers that eat producers will suffer the consequences
What are the initial letters of the insecticide used in the 1960's to kill mosquitoes?
DDT