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Flashcards in Unit Test Review Deck (44)
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1

What are the 4 trophic levels

Producer
Primary consumer
Secondary consumer
Tertiary

2

Trophic level

Feeding level of one or more organisms in a food web

3

Scavengers

An animal that feeds on dead plant or animal material
Ex vulture

4

Detritivores

Organisms that consume dead plant material and animal waste.

Feed at all trophic levels
Ex earthworm

5

Decomposers

Varios bacteria and fungi that break down dead material and waste and extract the remaining nutrients

6

When an animal takes in food what percentage goes where

Cellular respiration -30%
Growth-10%
Waste-60%

7

3 elements that make a carb

Hydrogen
Oxygen
Carbon

8

Photosynthesis equation

Carbon dioxide+ water+ light energy --->carb+oxygen

9

Cellular respiration equation

Oxygen+carb---->carbon dioxide+water+ thermal energy

10

4 most elements

Hydrogen
Oxygen
Nitrogen
Carbon

11

What type of plants bring lots of carbon

Legumes like alfalfa,clover and beans because the rhizobia on their roots attracts nitrogen and fixes it.

12

What 2 ions does nitrogen make

NH4
NO3

13

Nitrogen overload

When more nitrogen is added to the environment then can be absorbed.

14

Nitrogen saturation

When excess nitrogen washes from the soil into streams and ground water because it wasn't absorbed. I

15

Effects of nitrogen saturation

Stunted plant growth
Yellow needles
Damaged roots

16

How is nitric acid formed

When nitrogen containing gases from industrial smokestacks dissolve in the moisture in the air.

17

Eutrophication

The buildup of nutrients in an aquatic ecosystem.

18

Algae bloom

The added nitrates initially create a population explosion of algae in warm surface waters.

19

Biodiversity

The variety of living creatures in an ecosystem.

20

Monoculture

Only 1 type of organism in an area

21

Biological magnification

When certain harmful substances like pesticides move up through a food chain

22

Density dependent

Occur due to the degree of overcrowding

23

Density independent

Occur regardless of population

24

Poaching

Illegal hunting or fishing

25

Nitrifying bacteria

Bacteria that can convert ammonia to nitrates

26

Nitrification

The conversion of ammonia to form nitrates

27

Denitrification

The process of converting nitrates to nitrogen gas

28

Denitrifying bacteria

Bacteria that can convert nitrates to form nitrogen gas

29

MESEA

Manitoba endangered species and ecosystems act

30

MESEA LAWS

It is unlawful to kill,injure or process Any of these species
To destroy.or interfere with their habitat
Damage natural resources