compare and define

Question 1

biotic and abiotic

Answer 1

biotic
-living/has lived

abiotic
-not living/has never lived/ is neither dead nor alive

Question 2

community and population

Answer 2

community
-many of the same population

population
-many organisms of the same species

Question 3

autotroph and heterotroph

Answer 3

autotroph

• makes its own food via photosynthesis
• turns sunlight into chemical energy

heterotroph
-has to consume food for energy

Question 4

food chain and food web

Answer 4

food chain
-one chain

food web
-multiple intersecting food chains

Question 5

producer and consumer

Answer 5

producer
-produces its own food

consumer
-consumes its food

Question 6

herbivore, omnivore and carnivore

Answer 6

herbivore
-eats plants only

omnivore
-eats plants and animals

carnivore
-eats only animals

Question 7

niche and habitat

Answer 7

niche
-an animals’ behaviour with food and other animals

habitat
-where an animal lives

Question 8

intraspecific competition and interspecific competition

Answer 8

intraspecific competition
-when animals fight for a resource in their species

interspecific competition
-when animals fight for a resource between other species

Question 9

carrying capacity and population

Answer 9

carrying capacity
-environment is the maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water, and other necessities available in the environment.

population
-multiple organisms of the same species

Question 10

extinct, extirpated, endangered, threatened and special concern

+ invasive keystone native and indicator

Answer 10

extinct - none of the species exists anywhere, anymore

extirpated - species don’t exist in a certain place anymore but still exist in other places

endangered - species that faces extinction/extirpation.

threatened - A species at risk of becoming endangered if limiting factors are not reversed.

special concern - A species with concerns that make it sensitive to human activities or natural events.

Invasive Species
A non-native species that causes harm to the ecosystem in which it has been introduced to.
They tend to take out native species, often because they themselves have no natural predators in the new ecosystem or they produce faster than the native species do.
Ex. zebra mussel in Lake Erie.

Native Species
One of the original inhabitants of a country, especially a nonwhite as regarded by European colonists or travelers.
An animal or plant indigenous to a place.

Indicator Species
Thought to be sensitive to and therefore to serve as an early warning indicator of environmental changes such as global warming or modified fire regimes.
Ex. Frogs because they live in water and land, their thin skin is sensitive to changes in water and air.

Keystone Species
A species whose addition to os loss form an ecosystem leads to major changes in abundance or occurrence of at least one other species.
Ex. sea kelp, otters, stars,etc.

Question 11

sustainability and biodiversity

Answer 11

sustainability - how an ecosystem renews its resources

biodiversity - the variety of life in an ecosystem

Question 12

biosphere 1 and biosphere 2

Answer 12

biosphere 1 - the earth and the atmopshere lithosphere hydrosphere and geosphere

biosphere 2 - man made in arizona

Question 13

nitrogen fixation, nitrification and denitrification

Answer 13

nitrogen fixation - nitrogen to ammonia or another molecule

nitrification - ammonia to nitrate

denitrification - nitrate to molecular nitrogen

Question 14

algal bloom, phosphorus and eutrophication

Answer 14

algal bloom - rapid increase of algae in the aquatic ecosystem

phosphorus -

eutrophication - too much algae, algae die and take all oxygen with it, oxygen gone and animals die