Environmental B (Qs) Unit 4

Question 1

Describe what the United Sates census is.

Answer 1

It’s an extensive nationwide information-gathering project conducted by the US federal government.

Question 2

How often does the census take place?

Answer 2

Every 10 years

Question 3

Describe the kind of information about the population that is gathered by the census.

Answer 3

The information consist of the size of the population, age, employment, ethnicity, housing, income, race, and gender.

Question 4

What groups help decide the content of each census?

Answer 4

The Census Bureau, with the approval of the Office of Management and Budget and of Congress. They also consult federal state and local agencies; and business executives, educators, and researchers

Question 5

Why have most genetically modified crops been produced?

Answer 5

To make new traits that can benefit farmers, food manufacturers, consumers, or the environment.

For example, some of the genetically modified crops have increased resistance to disease or to damage from insects.

Question 5

Which countries are currently the major producers of GMOs?

Answer 5

US, Argentina, Brazil, Canada, China, and India

Question 6

Explain how most people in the US and other GM food-producing countries have eaten some form of genetically modifies food

Answer 6

Many ingredients used in processed foods, like sweeteners and starch come from corn or soybeans which is the most genetically modified plants in the US. Therefore, people have eaten a version of GMP

Question 7

What 2 variables cause a population to increase and what two variables cause a population to decrease?

Answer 7

Increase:
Birth (Reproduction)
Immigration

Decrease:
Emigration
Death (Organisms dieing)

Question 8

In nature, no population can increase its size indefinitely. Explain why this is so

Answer 8

Maintating Mastery

Limited amount of resources

Question 9

Describe the 3 age categories used in age-structure diagram

Answer 9

Post-reproductive-
Reproductive
Pre-reproductive

Question 10

Age-structure diagram of a population that is growing rapidly vs. Age structure diagram of a population that is reducing in size

Answer 10

Rapid
Larger pre-productive
Small amount of people dieing

Reducing
Larger Reproductive
Large amount of people dieing

Question 11

Describe what a GMO is

Answer 11

Take a gene from another species and insert it into the GMO

Desirable trait

Question 12

2 advantages and 2 disadvantages of GMOs

Answer 12

Maintaing Mastery

Disadvantages
Irritation to your body (DNA–DNA reads protiens may negativly react to the genes in food
New DNA may cause

All of them have the same DNA, then if there is a genetic issue, then they will all have that genetic issue

Company owns its organisms (They can sue you if you use thier GMOs)

Advantage
You can make it resitant to things (disease drought)

You can make more food by bigger fruit or more fruit on a tree

You can add compounds that the organism couldn’t make before

Question 13

Describe the most common interaction between species

Answer 13

Fighting for resources
(Competition for resources)

Question 14

Explain how the can toad is an efficient invasive species

Answer 14

Reproduces rapidly, Can eat anything, Has defense against predators, can live in most places as long as it has water

Question 15

Did the Can toads do their job?

Answer 15

Hunting time of the Frog does not overlap with the life cycle of the grub (Cane is short when the the beetle is in the grub stage (when the frog would eat it0 Can is short, but the beetle is in it’s beetle stage

Question 16

Wolf strategy

Answer 16

Pack hunting, isolates prey and