Ecosystems

The living parts of an ecosystem are known as ________________.

• abiotic factors
• biotic factors
• economic factors
• geographical factors

Tags

NGSS.MS-LS1-4

Which is an abiotic change in an ecosystem?

• The rate of photosynthesis in plants increases.
• The species of fish in a stream decreases.
• The population of ocean predators increases.
• The annual precipitation totals for an area decreases.

A citizen scientist observed migrating butterflies in her community. She shared the data online so other scientists could use it in their research. Scientists from different social, cultural, and ethnic backgrounds all working together illustrates...

• the nature of science.
• how science is biased.
• that scientists only rely on short term data.
• a scientific hypothesis.

Which statement is true about a puddle?

• A puddle cannot be an ecosystem because an ecosystem must be much larger than a puddle.
• A puddle can be a basic ecosystem with biotic factors like algae or water insects.
• A puddle can be a basic ecosystem with abiotic factors like tiny plants or worms.
• A puddle cannot be a freshwater ecosystem because a puddle is made of salt water.

Tags

NGSS.MS-LS2-2

Based on the data shown, one might infer that a new predator was introduced into the area. What is another possible explanation for the change in the deer population?

• The deer's prey increased in the area.

• Competition in the area increased.
• Deer parasites decreased in the area.

• The amount of plants in the area increased.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What terms should replace X and Y in the table?

• elements; compounds
• abiotic; biotic
• microscopic; macroscopic
• biotic; abiotic

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-3

What is an example of a population?

• different kinds of bacteria
• deer, bear, rabbits
• a group of fish and sharks
• a herd of cattle

What does the image best represent?

• Periodic table
• Levels of Organization
• Biosphere System
• Ecosystem

The image is an example of __________.

• community
• population
• ecosystem
• organism

The image represents which ecological level?

• community
• population
• ecosystem
• organism

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4