Keywords

Question 1

Ecoystsem

Answer 1

Community of biotic and abiotic components that interact with one another through complex interrelationships

Question 2

Biome

Answer 2

Global scale ecosytsem

Question 3

Adaptations

Answer 3

The way that plants and animals evolve in order to cope with certain conditions

Question 4

Abiotic components

Answer 4

Non-living features of an ecosystem (water, sunlight)

Question 5

Biotic components

Answer 5

Living features of an ecosystem (plants, animals)

Question 6

Producer

Answer 6

Organisms that obtain their energy from a primary source like the sun

Question 7

Consumer

Answer 7

Organisms that obtain their energy and nutrients from eating other organisms

Question 8

Food chain

Answer 8

A single line of links between different organisms that depend on each other as a source of food

Question 9

Decomposer

Answer 9

An organism like bacteria that break down dead tissue, which effectively recycles nutrients back into the environment

Question 10

Food web

Answer 10

A complex hierarchy of plants and animals that rely on each other for energy and nutients

Question 11

Nutrient cycling

Answer 11

A set of processes whereby organisms extract nutrients necessary for growth from soil and water, before passing them on through the food chain, and ultimately back to the soil and water

Question 12

Scavengers

Answer 12

Organisms that consume dead animals or plants

Question 13

Example of small-scale ecosystem

Answer 13

Freshwater pond

Question 14

Food chain in freshwater pond

Answer 14

Detritus -> midge larva -> great diving beetle -> fish -> heron

Question 15

Biomass

Answer 15

All living things in an ecosystem

Question 16

Litter

Answer 16

Dead plant material that has fallen to the ground

Question 17

Yellowstone national park - what happened

Answer 17

1- bears/ wolves killed for safety
2- deers increased
3- vegetation limited
4- wolves reintroduced
5- reduce population of deer + elk (20,000 to 10,000 in 8 years)
6 - vegetations regenerate (trees got 5x bigger in 6 years) 
7- stabilised river banks
8- less erosion (habitats)

Question 18

Give 2 negatives of Yellowstone Park

Answer 18

1- wolves and bears still pose a threat to humans as they associate public places with food
2- not sustainable - when hungry, elk and deer still risk going into areas threatened by wolves -> willow tree is not regenerating

Question 19

How does a food web show that different parts of the ecoystem are linked together?

Answer 19

Food web shows the interrelationsips that exist between between producers, consumers and decomposers to suggest the movement and transfer of energy throughout the complex hierarchy

Question 20

xerophytes

Answer 20

plants that are able to survive in very dry conditions through adaptation