After lava flows from a volcano, the lava can become igneous rock due to which process?

• Erosion
• Cooling
• Pressure
• Cementation

Some human activities release greenhouse gases, including carbon dioxide, into the atmosphere. Which step would most likely help reduce the amount of carbon dioxide released?

• reusing plastic bags instead of throwing them away
• watering plants with rainwater instead of using tap water
• traveling in cars instead of riding bicycles
• generating power with wind turbines instead of burning coal

What is Rock Type 2?

• sedimentary
• metamorphic
• igneus
• lava

What gas does X represent?

• Carbon Dioxide
• Nitrogen
• Water Vapor
• Oxygen

Which of the following is caused by the movements of these tectonic plates?

• hurricanes
• mountain forming
• seafloor spreading
• ocean currents

In the ocean, a sea anemone attaches itself to the shell of a hermit crab. The stinging arms of the sea anemone protect the hermit crab, while the movement of the hermit crab brings food to the sea anemone. Which best describes the relationship between the sea anemone and the hermit crab?

• commensalism
• mutualism
• parasitism

Dead matter and waste would pile up without which type of organism?

• decomposer
• consumer
• producer

This is an image of a _________.

• consumer
• scavenger
• decomposer
• producer

An illustration that uses arrows to show the many possible directions in which matter and energy can pass through the organisms in an ecosystem.

• Food chain
• Food web
• Energy Pyramid

The nonliving parts of an ecosystem.

• Abiotic factors
• Biotic factors