Energy Flow in Ecosystems
Cycles of Matter
Biomes
Aquatic Ecosystems
Biodiversity and Changing Ecosystems
100

This is a series of events in an ecosystem in which organisms transfer energy by eating and by being eaten.

What is a food chain?

100

This is the process by which molecules at the surface of a liquid absorb enough energy to change to a gas.

What is evaporation?

100

This is a group of ecosystems with similar climates and organisms.

What is a biome?

100

This is a kind of wetland formed where fresh water from rivers mixes with salty ocean water.

What is an estuary?

100

This is a species that influences the survival of many other species in an ecosystem.

What is a keystone species?

200

This is the pattern of overlapping feeding relationships or food chains among the various organisms in an ecosystem.

What is a food web?

200

This is the change in state from a gas to a liquid.

What is condensation?

200

This is the average annual conditions of temperature, precipitation, winds, and clouds in an area.

What is climate?

200

This is an area between the highest high-tide line on land and the point on the continental shelf.

What is the intertidal zone?

200

This is the first species to populate an area during succession.

What is a pioneer species?

300

This is a diagram that shows the amount of energy that moves from one feeding level to another in a food web.

What is an energy pyramid?

300

This is any form of water that falls from clouds and reaches Earth’s surface as rain, snow, sleet, or hail.

What is precipitation?

300

This is the tallest layer of the rain forest that receives the most sunlight.

What is the emergent layer?

300

This is the area of the ocean that extends from the low-tide line out to the edge of the continental shelf.

What is the neritic zone?

300

This is the series of changes that occur in an area where no soil or organisms exist.

What is primary succession?

400

This is the main source of energy for producers, consumers and decomposers.

What is sunlight?

400

These are the processes of the water cycle.  There are three.

What is evaporation, condensation and precipitation?

400

These are the two main factors that determine an area's biome.

What is precipitation and temperature?

400

These are the two types of aquatic ecosystems.

What is freshwater and salt water?

400

The illegal killing or removal of wildlife from their habitats.

What is poaching?

500

Since so much energy is lost going from one level to the next level up, the energy available at the  _____ level can support only a few organisms (top, middle, bottom.

What is the top level?

500

In an ecosystem, carbon and oxygen are both doing this.

What is being recycled?

500

An environment supports a population by providing all the necessary conditions for survival such as these three things.

What is food, water and space?

500

These are the four abiotic factors that affect all aquatic ecosystems.

What are sunlight, temperature, oxygen and salt content?

500

Grass poking through a sidewalk crack is an example of this type of succession.

What is secondary succession?