ENS Study Newest

Question 1

The Ecological Footprint of humanity compared the demand for ecological resources and services in a given year with what Earth can regenerate in that year. How many Earths are humans currently using?

Answer 1

1.6

Question 2

Doubling of world cereal production over the past decades has been mainly achieved by

Answer 2

Yield increase

Question 3

About 20% of the US cropland is irrigated. How much of the total value of crop sales is produced on irrigated cropland in the US?

Answer 3

50%

Question 4

How much of the US soybeans, cotton, and corn are genetically modified varieties?

Answer 4

> 90%

Question 5

Most of the fishery captures come from offshore waters in the open ocean

Answer 5

False

Question 6

Aquaculture now contributes more than 50% of the global seafood production.

Answer 6

True

Question 7

Water withdrawal in a country or region can be larger than the renewable freshwater resource that is available.

Answer 7

True

Question 8

The majority of land in the US is used for cow pasture/range

Answer 8

True

Question 9

Long Island’s water comes almost entirely from groundwater

Answer 9

True

Question 10

Sort the groups of organisms by their contribution to the global biomass (tons of carbon, high to low).

Answer 10

(5) wild mammals
(2) fish
(4) humans
(3) livestock
(1) plants

Question 11

Access to which of the resources listed below has been declared as human right by the UN?

Answer 11

Food
Water

Question 12

Neonicotinoids…

Answer 12

have been the world’s most widely used insecticides for a long time.

have been found to significantly contribute to the decline polinating insects.

are still being used in most US states.

Question 13

By far, most water in the USA is withdrawn for

Answer 13

Electric power generation

Question 14

How many humans live currently on planet Earth?

Answer 14

a bit more than 8 billion

Question 15

How much of the Earth’s land area is currently used for agriculture?

Answer 15

33%

Question 16

A third of the world’s total grain harvest is

Answer 16

used to feed livestock

Question 17

We currently do not produce enough food to feed everyone on the planet.

Answer 17

False

Question 18

Global cereal production has increased 4-fold over the past 60 years mainly by increasing the land used for cereal production.

Answer 18

False

Question 19

Water withdrawal within a country is always higher than water consumption.

Answer 19

True

Question 20

The land use per 100g of protein is more than 20-times higher for beef than for chicken.

Answer 20

True

Question 21

All natural resources are renewable

Answer 21

False

Question 22

The water footprint of a product can be separated into a Green Water Footprint, a Blue Water Footprint and a Grey Water Footprint. Match these different footprint to what they refer to.

1. refers to the water from precipitation incorporated in a product
2. refers to the water that has been sourced from surface or groundwater resources incorporated in a product
3. refers to the amount of freshwater required to dilute polluted water to meet specific water quality standards

Answer 22

__3__
Grey water footprint

__2__
Blue water footprint

__1__
Green water footprint

Question 23

Feed conversion efficiency…

Answer 23

Is the measure of an animal’s efficiency at converting feed to biomass

is higher for poultry than cattle/beef

Question 23

Some genetically modified organisms…

Answer 23

have been engineered to tolearte the application of specific herbicides.

have been engineered to grow faster and to be more resistant to disease, stress, and insects

do not produce seeds that can be used by farmers in the next year.

now dominate some major crops in the US.

Question 24

The ratio of agricultural land used to produce crops versus livestock (meat and dairy) is approximately

Answer 24

23:77

Question 25

It is predicted that by 2030 the world will need to produce _____% more food, ______% more energy and ______% more freshwater

Answer 25

50, 50, 30

Question 26

By far most of the water in the USA is consumed by

Answer 26

agriculture

Question 27

The current growth of the human population is approximately 1 billion people every ____ years.

Answer 27

12

Question 28

New York City' s water comes almost entirely from groundwater.

Answer 28

False

Question 29

Water consumption in a country is always higher than water discharge.

Answer 29

False

Question 30

Natural resources can be matter or energy

Answer 30

True

Question 31

The world population growth rate has been declining over the past few decades.

Answer 31

True

Question 32

There are only approximately 2 times more wild birds than there are birds that are chicken or other poultry

Answer 32

False

Question 33

The water footprint of a product can be separated into a Green Water Footprint, a Blue Water Footprint and a Grey Water Footprint. Match these different footprint to what they refer to.

Answer 33

1. refers to the water from precipitation incorporated in a product 2. refers to the water that has been sourced from surface or groundwater resources incorporated in a product 3. refers to the amount of freshwater required to dilute polluted water to meet specific water quality standards __2__ Blue water footprint __3__ Grey water footprint __1__ Green water footprint

Question 34

Water can be consumed by...

Answer 34

pollution evaporation on irrigated land incorporated into products that are exported evapotranspiration people and livestock

Question 35

Freshwater scarcity can increase due to…

Answer 35

increasing demand Groundwater pollution climate change

Question 36

The carrying capacity of a biological species is….

Answer 36

the maximum population size that can be sustained by the environment

Question 37

One third of the world's food...

Answer 37

is wasted

Question 38

Globally, most of the water is withdrawn for...

Answer 38

agriculture

Question 39

How much of the Earth's habitable/arable land is currently used for agriculture?

Answer 39

50%

Question 40

More than 85% of soy, corn, canola, and sugar beets produced in the US are GMCs.

Answer 40

True

Question 41

More area on our planet is used for agriculture than there are forests.

Answer 41

True

Question 42

Most of the water in the US is provided by the private sector

Answer 42

False

Question 43

Global cereal production has increased 4-fold over the past 60 years mainly by increasing the land used for cereal production.

Answer 43

False

Question 44

Aquaculture now contributes more than 50% of the global seafood production.

Answer 44

True

Question 45

Sort the groups of organisms by their contribution to the global biomass (tons of carbon, high to low).

Answer 45

(1) plants (3) livestock (2) fish (4) humans (5) wild mammals