Maeve's Unit 3 Math and Theory practice

If the annual growth rate is 1.2 percent, what number do we divide 70 by?

• 0.012

• 0.12

• 1.2

• 12

A country has a CDR of 15 and a CBR of 19. What is the doubling time?

• 175 years

• 18.6 years

• 19.7 years

• 17.5 years

To calculate global population growth rate, we subtract ​​ (a)   from ​ (b)   and divide by ​ (c)  

• CDR
• CBR
• 10
• 15
• 19
• 20
• R
• N
• GDP
• DT

A cow herd of 150 has 30 calves born, 19 deaths, thirteen cows added by the owner and ten cows sold off by the owner. Is the population increasing, decreasing, or remaining stable?

• Increasing

• Decreasing

• Remaining stable

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

If Atlantis has a CBR of 6 and a CDR of 5, what is the doubling time?

• 0.7 years

• 7 years

• 70 years

• 700 years

According to Malthusian theory, there would be mass starvation if human population growth exceeded this

• Sustainable ecological footprint.

• Carrying capacity

• Overall death rates

• Global environmental capacity

Tags

NGSS.HS-LS2-1

Percent change is calculated by subtracting ​ (a)   from ​ (b)   and dividing by ​ (c)   then multiplying by ​ (d)  

• Initial /old
• final/new
• 100
• average
• 10

If the doubling time is 45 years, what is the growth rate?

• 1.4

• 1.2

• 5

• 1.6

If the US had 156,000 cows in 1980 and 185,000 cows in 2020, what is the percent change in the number of cows in the US?

• 6%

• 15%

• 19%

• 9%

Which stage has a DECREASE in population growth rate?

• Stage 1

• Stage 2

• Stage 3

• Stage 4

Tags

NGSS.HS-LS4-5