Man & His Environment

Question 1

describe levels of organization?

Question 2

environmental components can be divided into?

Answer 2

factors
abiotic
biotic

Question 3

biotic components?

Question 4

consumers?
primary consumers?
secondary consumers?
carnivores?
teritary consumers?
omnivores?

Question 5

abiotic components?
most animals cant tolerate temp. above ____
most plants cannot grow below?
in animals ______ with decrease in temp.

Question 6

functioning of ecosystem uses?
energy enters the e from and flows through e in the form of?
wb materials

Answer 6

energy and materials

Question 7

what is trophic level? name them?

Question 8

what is energy flow? how is it inefficient?

Answer 8

pg 97

Question 9

diff. b/w flow of energy and nutrients in an ecosystem?

Answer 9

pg 98

Question 10

what is food chain?

Question 11

what is food web?

Question 12

at each trophic level there is difference in?what is ecological pyramid? what does each section tell us?

Question 13

what is pyrmaid of numbers? example?

Question 14

what is pyramid of biomass?
what is biomass?
example?

Question 15

what is geochemical cycles? name some imp?

Answer 15

the natural pathways by which essential elements of living matter are circulated.

Question 16

carbon cycle? where is most carbon stored? rest? what happens in cycle when a & p remove CO2 through?

Answer 16

respiration

Question 17

name the carbon cycle steps?

Answer 17

7

Question 18

N2 makes _____ of the atm. by vol.
why is N2 needed? name steps of N2 cycle?

Answer 18

78%

Question 19

nitrogen fixation? first step? name all the steps of N2 cycle?

Question 20

nitrogen fixation name first step and then 2nd step?

Question 21

ammonification is done by? nitrification? ammonia is converted into nitrites by bacteria ________? & then nitrites are converted to ______ by ______.

Question 22

N2 cycle 2nd and 3rd step?

Question 23

in how many ways organisms interact with each other? name them.

Answer 23

6

Question 24

what is competetion? what is it caused by? types? examples?

Question 25

predation in animals? examples?

Question 26

predation in plants? what are they called? aka? cause for it? examples

Question 27

symbiosis? what is mostly involved? symbionts? types?

Question 28

parasitism? types? examples? harms that parasites cause?

Question 29

cascuta?

Question 30

mutualism? 3 examples?

Question 31

commensalism? 2 examples?

Question 32

how is ecosystem kept balanced?

Question 33

causes for the extinction of species

Question 34

urbanization? effects?

Question 35

steps to stop urbanization?

Question 36

name greenhouse gases? explain green house effect? relate to global warming.
processes that change the balance of CO2?

Question 37

possible outcomes of global warming?

Answer 37

7

Question 38

how does deforestation damage carbon cycle & water cycle and cause flooding?

Question 39

what are harms of deforestation?

Question 40

causes of acid rain

Question 41

effects of acid rain?

Question 42

when did air pollution first start? what is it?

Question 43

causes of air pollution?

Question 44

effects of air pollution?

Answer 44

4

Question 45

control of air pollution?

Answer 45

7

Question 46

causes of water pollution

Answer 46

5

Question 47

eutrophication?

Answer 47

4

Question 48

effects of water pollution?

Answer 48

3

Question 49

control of water pollution?

Answer 49

4

Question 50

what is soil pollution?

Question 51

causes of soil pollution?

Answer 51

8

Question 52

effects of soil pollution?

Answer 52

4

Question 53

control of soil pollution

Answer 53

8

Question 54

renewable resources

Question 55

non-renewable resources
explain conservation of nature

Question 56

4 Rs