Ecosystems Unit Review

When two species attempt to use the same resource and one outcompetes the other

• competitive exclusion

• demographic transition

• directional selection

• resource partitioning

Five species of warblers coexist in the same fir tree by occupying different areas of the tree. This demonstrates

• adaptive radiation

• competitive exclusion

• natural selection

• resource partitioning

Tags

NGSS.MS-LS2-1

Why do biomes near the equator have greater biodiversity than those near the poles?

• due to ecological succession

• due to the invasion of exotic species

• the temperature & precipitation is greater near the equator

• the temperature & precipitation is greater near the poles

Tags

NGSS.MS-LS1-5

Why are phytoplankton more abundant near the surface of oceans?

• to be more accessible to other organisms

• sunlight cannot penetrate great depths

• they are ba-ba-ba benthic organisms

• because they feed on zooplankton that live there

Tags

NGSS.MS-LS1-6

Where would you find the greatest diversity in the ocean?

• away from the shore near the surface

• in the deepest parts of the ocean

• in the middle depths of the ocean

• near the shore and close to the surface

What causes seasonal fluctuations in carbon dioxide levels?

• differences in air temperature

• differences in water temperature

• variations in photosynthetic activity

• variations in sea level

Tags

NGSS.MS-LS1-6

What is a primary source of nitrates & phosphates?

• burning of coal

• changes in environmental temperature

• fertilizers and sewage

• nitrogen fixation and lightning

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-3

Why is the main reason phosphorus is a limiting factor?

• it cannot be readily taken up by plants

• is cycles too quickly through the biosphere

• it is insoluble in water and forms sediments like rock

• there is too much of it in nature typically that it is toxic

Which element does NOT have a gas phase?

• carbon

• nitrogen

• phosphorus

• sulfur

Stage of the hydrologic cycle where plants lose water from their pores

• condensation

• evaporation

• precipitation

• transpiration

Tags

NGSS.MS-ESS2-4