Ecosystems

• Observation 1

• Observation 2

• Observation 3

• Observation 4

• Suggestion 1

• Suggestion 2

• Suggestion 3

• Suggestion 4

An African savanna is a grassland with shrubs and a few small trees. It has warm temperatures all year long, a dry winter season, and a rainy summer season. Which group of animals is most likely supported by an African savanna? (3.9A)

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A plant uses which nonliving components to produce food and oxygen?

• sunlight, water, and carbon dioxide

• sunlight and carbon dioxide

• water, and carbon dioxide

• Soil, ice, and oil

An ecosystem refers to:

• only living things

• All living and nonliving things in an area

• only nonliving things

This diagram is a model of which of these?

• food web
• food pyramid
• food chain
• life cycle

What might happen if there were no apex predators in this ecosystem?

• zebra population would grow fast
• other animals wouldn't have enough grass to eat
• the food web would be out balance
• all of the above

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

The relationship between living and living and/or nonliving things for survival is:

• interdependence

• niche

• organism

• reproduction

Which of these populations is most likely to decrease if the number of grasshoppers decreases?

• plants
• frog
• praying mantis
• owl