Ecosystems

Question 1

what does biotic mean

Answer 1

living things in an eccosystem

Question 2

give examples of micro organisms

Answer 2

fungi and bacteria - decomposers

Question 3

what is soil needed for

Answer 3

nutrients for plants
homes for insects
food shelter for animals

Question 4

what makes up an eccosystem

Answer 4

plants animals and there surroundings microorganisms and soil

Question 5

what are abiotic components give examples of abiotic components

Answer 5

non living - rock soil sun and rain

Question 6

how are abiotic and biotic systems linked

Answer 6

physically animals eating plants

chemically the acid in rain speeds up decay

Question 7

how do rocks help the ecosystem

Answer 7

rocks erode and help soil to form

Question 8

what do all ecosystems depend on

Answer 8

constant light from sun, rain from atmosphere

Question 9

how is change brought about in an ecosystem

Answer 9

animals and plants move about from one place to another

Question 10

how big is an ecosystem

Answer 10

can be any size

Question 11

name 4 types of ecosystem

Answer 11

local - habitat
regional - lake district
global biomes- rainforests
earth- all planets organisms are linked

Question 12

what is biomass

Answer 12

living vegetation and animals

Question 13

what are primary producers in a food chain

Answer 13

plants as they photosynthesis

Question 14

what are primary consumers in a food chain why and give an examole

Answer 14

herbivores as they et plants eg rabbit

Question 15

what are secondary consumers in a food chain and why give an example

Answer 15

carnivore as they eat herbivores eg fox

Question 16

what are top carnivores in a food chain why and give examples

Answer 16

carnivores who eat other carnivores eg lion or wolf

Question 17

How is the relationship between consumers, carnivores, herbivores shown

Answer 17

in a food chain

Question 18

give 2 reasons why weight or biomass gets small at each level in a food chain

Answer 18

many parts of a plant or animal are not eaten and much of what animals eat is excreted
energy is lost at each level - hunters use kinetic energy when chasing prey. Energy is constantly used in respiration and to stay alive .

Question 19

what are decomposers

Answer 19

organisms that over time break down dead organic matter and help return nutrients to the soil

Question 20

what are detritivores

Answer 20

bacteria