B

What happened to the brown pelican populations as a result of DDT use by humans?

• The populations increased much more slowly

• The populations decreased as fewer eggs survived long enough to hatch.

• The populations remained stable over time.

• The populations increased as pelicans laid more eggs so that more offspring would survive.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

• The soot-covered trees camouflaged the dark moths
• The dark moths prey on the light moths
• Bird populations increased in the area near the factories
• The dark moths laid fewer eggs than the light moths

Tags

NGSS.MS-LS2-4

NGSS.MS-LS3-1

NGSS.MS-LS4-4

• A
• B
• C
• D

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

• F
• G
• H
• J

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

What is one way humans are trying to positively impact (help restore) the ocean?

• Over fishing

• Drilling for oil and natural gas

• Creating artificial reefs

• Dumping plastics in the ocean

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-5

Every spring, ecologists record several environmental measures and are looking for a relationship to the deer population in a park. Using her data, what generalization can you make?

• The deer population decreases with sudden spikes in temp.

• Deer are dependent on grass growing with ample rainfall

• Deer do not adapt well in cooler environments

• There was significantly more hunting in 2011

Tags

8.11B

Using the chart, what would most likely happen if this specific ocean location was overfished by humans?

• Decrease in the activity of marine worms

• Decrease in the amount of algae

• Decrease in the available energy of the sun

• Increase in shark population

Tags

8.11B

Which of these represent the producer

Tags

7.5B

Which of these represent the Primary consumers (hint: 2 answers)

Tags

7.5B

How many secondary consumers are found in this food web?​ (a)  

• 3

• 1

• 2

• 4

• 5

Tags

7.5B