Ecosystems

Which of the following is an abiotic factor?

• sun

• tree

• bug

• grass

Tags

NGSS.MS-LS2-3

What happens to the population and to competition when there is a reduction of living space?

• wild animals mark their territory

• competition strengthens while the population contracts

• competition weakens and population decreases

• Both increase

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-2

The meanings of the terms habitat and niche are often confused or are intertwined. Which of the following describes the difference between these two terms?

• A niche is the place where an organism lives. A habitat is the job or role of an organism.

• 
  A habitat is a place where an organism lives. A niche is the job or role of an organism.

• 
  A habitat has to do with how the organism interacts with its environment. A niche is the job or role of an organism.

• A niche involves the food, water, and shelter that an organism has access to. A habitat is a place where an organism lives.

Which statement best describes the difference between a biome and an ecosystem?

• Biomes make up ecosystems.

• They are the same thing.

• Ecosystems make up biomes.

• Biomes and ecosystems are not related.

What are the five levels of environmental organization from largest to smallest?

• biosphere, ecosystem, community, population, organism

• ecosystem, biosphere, population, organism, community

• biosphere, population, ecosystem, community, organism

  
  

• biosphere, ecosystem, population, community, organism

Which of the following is the first step in the Nitrogen cycle?

• Assimilation

• Denitrification

• Fixation

• Ammonification

What is an association between two organisms where one benefits and the other organism is neither benefited nor harmed?

• mutualism

• commensalism

• competition

• predation

A type of symbiotic relationship in which one organism benefits and the other organism is harmed is called ____________?

• Predation

• Commensalism

• mutualism

• parasitism

Which symbiotic relationship involves two organisms where an animal hunts and consumes another for food?

• commensalism

• mutualism

• predation

• parasitism

Which relationship involves two or more animals that require the same resources in order to survive?

• Mutualism

• Commensalism

• competition

• predation