Earth week 1

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Tags and Description

(chapters 1 and 2)

31 Terms

1

stock

is the harvestable portion of the resource

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2

total impact (I)=

product of population(p) x affluence(A) x technology(T)

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3

carrying capacity

is a measure of the ability of a system to support life

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4

ecological footprint

the environmental impact of an individual or population

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5

overshoot

humans have surpassed earth capacity (using 39% more of the planets resources)

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6

scientific method

observations, questions, hypothesis, predictions, tests, the results either support or reject hypothesis

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7

manipulative experiments

yield the strongest evidence (show causation, not always possible)

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8

natural or correlational tests

show real-world complexity (cannot show causation)

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9

canadas ecological footprint

about 7.6 ha

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10

since the industrial revolution atmospheric co2 concentrations have risen…

over 40% to the highest level in 800,000 years

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11

sustainable development

the use of resources to satisfy current needs without compromising future availability

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12

triple bottom line

sustainable solutions that meet environmental goals, economic goals, and social goals

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13

matter

all material in the universe that has mass and occupies space

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14

hydrogen bonds

o2 from one water molecule to be attracted to the hydrogen atoms of another

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15

most acidic to least acidic

battery acid, lemon juice, rain, pure water, sea , ammonia, naoh

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16

proteins

produce tissues provide structural support, store and transport energy

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17

DNA and RNA

info in DNA is rewritten to RNA. RNA directs amino acid assembly into proteins

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18

genes

regions of DNA that code for proteins that perform functions

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19

genome

an organisms genes - divided into chromosomes

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20

lipids

dont dissolve in water

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21

plastics

synthetic polymers, cause long-lasting waste and pollution

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22

energy conversion efficiency

the ratio of useful energy output to the amount needing to be input

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23

chloroplasts

organelles where photosynthesis occurs (contains chlorophyll)

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24

heterotrophs

organisms that gain by feeding on others

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25

cellular respiration

C6H12O6 + 6O2 = 6CO2 + 6H2O + energy

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26

hydrothermal vents

host entire communities that thrive in high temperatures and pressure on the ocean floor

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27

chemosynthesis

uses chemical bond energy to produce sugar

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28

primordial soup (the heterotrophic hypothesis)

life originated from a soup of simple inorganic chemicals in the oceans

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29

“seeds” from space (the panspermia hypothesis)

microbes from space traveled on meteorites to Earth

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30

Life from the depth (the chemoautotrophic hypothesis)

life originated in deep-sea hydrothermal vents with abundant sulfur

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31

how many major plate tectonics

15

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