Food chains and webs
What is a food chain? What does it show?
A food chain is a diagram that shows what an
the organism eats.
It shows the transfer of energy
between organisms.
What is interdependence?
Interdependence is the way in which living organisms depend on
each other to survive, grow, and reproduce.
How much percent of chemicals does the predator take?
A: 10%
What do animals compete for
food, water, space, mates.
Name one way fish adapt(Gills and tail).
Gills: Made fish easily breath underwater
Tail: Made fish easily swim underwater
What are the 3 types of consumers? Explain each of them.
Primary consumers: consumers that eat producers
Secondary consumers: Consumers that eat primary consumers
Tertiary consumers: Consumers that eat secondary consumers
What is the chemicals that some farmers use to
kill insects that eat their crops?
Give us two names for it.
insecticides/pesticides
What does a population mean?
A: the number of same organism
What do plants competes for
nutrients, water, and light
Why do animals adapt to the environment?
They have to survive in the cold and to survive from the prey.
What does arrows of the food chain show?
It shows the transfer of energy.
What does the population of species affect?
The population of species is
affected by the number of
its predators and prey,
disease, pollution and
competition.
name 5 levels of organizations
A: organism, population, community, ecosystem
Why do animals fight each other?
there is a limited supply of resources which makes the animals compete so that they can get enough supply to survive.
4 ways that animals cope with the season.
Hibernation, migration, and thick fur.
What is the difference between What is the meaning of producer and consumer?
Producer: The first organism, which is a green plant or algae that
makes food by photosynthesis.
Consumers: Organisms that eat plants Or other animals
Give us an example of bioaccumulation
No Answer
Explain what a community is
A community means the same organisms living in the same place.
Who are the best competitor?(animal)
Fast, quick to spot the prey, and strong.
How does snowshoe hare adapt with the environment during winter?
Their fur changes the color to white to camouflage with the environment(thick fur).
What are 3 types of consumers? Explain each of them.
Primary consumers: consumers that eat producers
Secondary consumers: Consumers that eat primary consumers
Tertiary consumers: Consumers that eat secondary consumers
Explain 5 levels of organizations.
Individual: One living organism
Population: The number of animals or plants of the same species
that live in the same area.
Community: populations that live together in the same area.
Ecosystem: Community and its nonliving surroundings
Biotic Factors: living things
Abiotic Factors: nonliving things (sun, wind, water, soil, etc.)
Biosphere: the part of Earth that contains all ecosystem
Name all types of ecosystems
grassland, forest, desert, ocean, freshwater lakes, crop field, aquarium
Describe how a cactus is able to survive in the desert without drying?
A waxy layer that covers the plant - this reduces water escaping from the plant.
Stems that can store water
Widespread roots - to collect water from a large
area
Spines instead of leaves - this gives a smaller surface area to reduce water loss. Spines also prevent the plant being eaten.
Cycle of predator and prey relationship.(Prey population increasing first)
When the prey pop. increases, the predator have more to eat, so they survive longer and reproduce more.
This increases the number of predators.
The growing predator pop. eats more prey. The prey numbers fall.
There is not enough food, so predator dec.
Fewer lyrnx feeding on the hares, so prey pop. inc. and the cycle starts again.