Cycles of Matter
Oxygen is in the carbon cycle because
animals breathe in the oxygen from plants and let out CO2 that plants breathe in
When a predator population decreases,
it's prey's population increases. (vice versa)
biodiversity
What is ecological value?
It is that when biodiversity is intact, it is more resiliant and then able to give us the services and cycle all of the things
Plants are involved in the carbon cycle because
they suck in the carbon that humans breathe out
In ___, both animals benefit. Two species may depend on one another.
mutualism
An area with high biodiversity will have ___ of resources available. An area with less biodiversity will have ___ resources available.
a lot; fewer
What is a keystone species?
Is a species that influences the survival of many other species in an ecosystem.
Plants are in the oxygen cycle because
they produce the oxygen humans need to breathe
In ___, a relationship in which one species benefits and the other species is neither helped nor harmed.
commensalism
What is the economic value of biodiversity?
the value we get as a household income
What affects Biodiversity?
Niche: it gives the animals food, water, and habitats. If there are more than one species in an area, than there could be competition Genetics: The more there is in genetic diversity, the more likely an animal will survive during changes Species Extinction: some animals go extinct over time and sometimes there is a mass extinction where many animals go extinct at one time Other: The amount of area in an ecosystem. The rainforest has biggest biodiversity bc climate does not change there much
Plants are in the nitrogen cycle because
the nitrogen fixing bacteria in the roots fix the usable nitrogen from the air and make it into usable nitrogen
In ___, a relationship that involves one organism living with, on, or inside another organism and harming it.
parasitism
Examples of direct economic value are:
crops, medicines, raw materials
Extinction, Endangered, Diversity, Natural, Habitat, Extinct
Why do we need nitrogen
it is an important component for building proteins in animals and an essential nutrient for plants
Give examples of the 3 types of symbiosis
mutualism - acacia trees and stinging ants
commensalism - birds and trees
parasitism - dogs and fleas
Examples of indirect economic value are:
shade from trees, wetland control of flooding, hiking, touring unique habitats
Why is Biodiversity important?