The higher the temperature, the more dissolved oxygen in water.

• True

• False

Which of these can do photosynthesis?

• Algae

• Seaweed

• Trees

• All of the above

Tags

NGSS.MS-LS1-6

Colder water.....

• hold MORE dissolved oxygen

• holds LESS dissolved oxygen

How does low Dissolved Oxygen levels affect organisms?

• Organisms may die or have to leave if levels get too low

• Organisms go through more cellular respiration

• Organisms eat more

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Algae blooms will ____________ the amount of dissolved oxygen in an aquatic system.

• Decrease

• Increase

Tags

NGSS.MS-LS2-3

1. In an ecosystem, which of the following processes involves direct heat transfer (flow) through physical contact? 

• Conduction

• Decomposition

• Radiation

• Convection

Which heat transfer method involves energy (heat) flow through air or fluid?

• Conduction

•  Convection

•  Radiation

•  Radiation

A living or once-living organisms in an ecosystem is a

• population
• biotic factor
• abiotic factor
• community

Is a deer an abiotic or biotic factor? 

• abiotic
• biotic

Tags

NGSS.MS-LS2-2

Is sunlight an abiotic or biotic factor? 

• abiotic
• biotic

Tags

NGSS.MS-LS1-6