Quiz 2: carbon footprint of milk

1/20/2021 Quiz: Quiz 2: carbon footprint of milk

https://canvas.okstate.edu/courses/96466/quizzes/227578/take?preview=1 1/14

Quiz 2: carbon footprint of milk

This is a preview of the published version of the quiz

Started: Jan 20 at 4:12pm

Quiz InstructionsPlease read the article The Carbon Footprint of Milk to answer the following questions.

A hard copy of the questions are available here (http://dasnr39.dasnr.okstate.edu/farm2fork/q21/Q2.pdf).

1 ptsQuestion 1

75%

50%

90%

75%

None of the above. Milk prices are the same.

The price of milk today is only _____ of its price in 1890 (adjusting for inflation).

1 ptsQuestion 2

False

True

When Americans were surveyed about why milk can be produced using only 20% ofthe animal feed needed in 1945, more people answered either 'growth hormones' or'drugs and steroids' than 'genetics and breeding'.

http://dasnr39.dasnr.okstate.edu/farm2fork/q21/Q2.pdf



1 ptsQuestion 3

True

False

Most Americans realize that the lower milk prices today compared to 1945 are causedby better genetics and nutrition.

1 ptsQuestion 4

By experimenting on injured soldiers during the Crimean War (without their awareness)

By experimenting on mice, he discovered how an organism digests food

By allowing other people to place food into, and then retrieve food from, his stomach.

By recognizing that the stomach of a mouse can still digest food hours after its death

By experimenting with feeding cattle feed to people, and human food to cattle (thoughwithout the human's awareness)

What was Alexis St. Martin's contribution to the science of nutrition?

1 ptsQuestion 5

Their large intestine is missing

They have two stomachs instead of the normal four

They chew their cud as if they are ruminants

They have a hole in their side in which you can access their stomach

What is unique about a cannulated or fistulated cow?



They have four stomachs instead of the normal single stomach

1 ptsQuestion 6

Why dairy cows emit so much carbon

Why dairy cows emit carbon but not methane

Why adding calcium carbonate to dairy cattle feed improves health

Why adding calcium carbonate to dairy cattle feed results in sickness

What did North Carolina State University use fistulated steers to determine?

1 ptsQuestion 7

Combos

Cheetos

Doritos

Tortilla chips

Which popular snack food was created by modifying a corn-based cattle feed?

1 ptsQuestion 8

To make corn more easily digestible to cattle and reduce cuts to their teeth from sharpcorn kernels the kernels are often ______ before being fed to cattle.



flaked

broken down with enzymes

mixed with hay

moistened

1 ptsQuestion 9

27.5%; 38%.

21.23%; 15%.

30%; 90%.

47%; 40%.

The number of dairy cows in the U.S. has decreased by ______ since 1960 whiletotal milk production has risen _____. [Note: to calculate a percent change use thefollowing formula: % change in X = (new value of X _ old value of X)/(old value of X).If this percent change is -10% that means it has decreased 10%.]

1 ptsQuestion 10

2,326

4,001

1,045

4,325

In 1960 the average cow produced 755 gallons per year while the average cow todayproduces ________ gallons per year.



1 ptsQuestion 11

1/4; 1/2

1/10; 1/8

1/5; 1/3

1/9; 1/15

1/2; 1/2

To produce a gallon of milk today dairy cows today need only _____ of the feed and______ of the water they would have needed in 1945.

1 ptsQuestion 12

hay, cotton seed, grains, and vitamins and minerals

haylage, grains, and vitamins and minerals

sileage, grains, and vitamins and minerals

hay, soybean meal, and ground corn

The cattle feed at the OSU dairy farm consists of

1 ptsQuestion 13

6

5

The carbon footprint of a gallon of milk in 1945 was about ________ times higherthan the footprint today.



2

3

4

1 ptsQuestion 14

True

false

The carbon footprint of milk measures carbon emissions from milk production but notother greenhouse gases like methane

1 ptsQuestion 15

520,000 kg CO2-e

120,000 kg CO2-e

80,000 kg CO2-e

100,000 kg CO2-e

Suppose a farm emits 100000 kg of carbon dioxide and 20000 kg of methane. Whatis its carbon footprint?

1 ptsQuestion 16

Suppose a household consumes 50 pints of milk per year. What is its annual carbonfootprint from its fluid milk consumption?



10.12 kg CO2-e

98.54 kg CO2-e

36.15 kg CO2-e

228.00 kg CO2-e

1 ptsQuestion 17

700.81 g CO2-e per pint




What is the carbon footprint of milk only counting those emissions that occur at thefarm?

1 ptsQuestion 18

3 times higher than in



2/3 of that in

1/2 of that in

Although more milk is produced in the U.S. today than in 1945 the total carbonfootprint from all milk production is _______ 1945.



1 ptsQuestion 19

It would remain the same

It would rise

It would fall

Suppose that over time the carbon footprint from one gallon of milk is cut in half butover that time period total milk production rose 70%. How would the total carbonemissions from all milk production change?

1 ptsQuestion 20

It would remain the same

It would rise

It would fall

Suppose that over time the carbon footprint from one gallon of milk is cut in half butover that time period total milk production rose 100%. How would the total carbonemissions from all milk production change?

1 ptsQuestion 21

Fart; thrice

Burp; once

Fart; twice

Burp; thrice

Cows emit methane as they ______ and they do so about ______ every minute.



Burp; twice

Fart; once

1 ptsQuestion 22

better feed

better management and feed

cheaper feed

better genetics

About two-thirds of the productivity improvements in the last fifty years in the dairyindustry is due to

1 ptsQuestion 23

Angus

Holstein

Simmental

Jersey

Brahma

The black and white cows you see in Chick-fil-A commercials are called____________ cows and are the most popular breed due to their superior milkproduction.

1 ptsQuestion 24



Angus; lactose

Holstein; butterfat

Holstein; protein

Jersey; protein

Jersey; butterfat

Small brown dairy cows are called ____________ cows and have the advantage ofconverting feed to milk more efficiently and producing more ___________ in theirmilk.

1 ptsQuestion 25

Jersey

Holstein

Identify the breed of dairy cattle in this picture



Jersey

Guernsey

Angus

1 ptsQuestion 26

The Oriental Steppes

Britain and Europe

South America (including the Falkland Islands)

Austrailia and New Zealand

China and Korea

The popular dairy breeds in the U.S. all originated from

1 ptsQuestion 27

Whether the cow had straight or curved horns

The direction of its hairs on the rear part of her udder

Whether it was a full moon when the cow was born

The number of baptisms taking place in the local community when the cow was born

A farmer in the Elizabethan Age would try to predict a cow's milk production by

1 ptsQuestion 28



Carbohydrate; protein

Energy; protein

Protein; energy

Energy; carbohydrate

Protein; carbohydrate

The twentieth century saw great improvements in nutrition science such as crackinggrain to make them more easily digestible by cattle. Another improvement is providingfeed based on the cows' _______ needs not her _______ needs.

1 ptsQuestion 29

bull semen

animals

cattle feed

milking facilities

Roughly half the cost of producing milk is the cost of the

1 ptsQuestion 30

Rules-of-thumbs about how the feed should be designed

Recommendations based on the farmers' almanac

None of the above

A dairy cow's diet is determined by the cow's nutritional needs the price of variousfeeds and _______.



Computer algorithms

1 ptsQuestion 31

None

4

1

2

3

How many stomachs does a cow have?

1 ptsQuestion 32

wheat straw

Garlic

teosinte seed

pine straw

Heather flowers

According to the article which of the following items can be added to cattle feed toreduce methane emissions.

1 ptsQuestion 33



Not saved

Increases milk production

Reduces emissions of methane emissions through belching

Helps convert carbon dioxide in the rumen to hydrogen peroxide

Reduces emissions of carbon dioxide emissions through flatulence

Reduces milk production

What does adding the 3NOP inhibitor to cattle feed accomplish? Select all correctanswers.

1 ptsQuestion 34

Tax dairy farmers based on the carbon footprint from their farm

Help farmers that use the supplement to label their milk as containing a lower carbonfootprint

Tax the use of the supplement

Simply require all farmers to use the supplement

Subsidize the use of the supplement

How can we encourage farmers to use dairy feed supplements that reduces thecarbon footprint of milk? Please select all correct options.

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Quiz 2: carbon footprint of milk