Your answer b community question number 17 points

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Your AnswerB. Community
Question Number 17Points: 5.00/5.00Question Text_____ involves one organism killing and eating another organism.Your AnswerC. PredationQuestion Number 18Points: 2.00/2.00Question TextThe part of the earth that supports life is called the atmosphere.Your AnswerFalseQuestion Number 20Points: 2.00/2.00Question TextOceans, lakes, and ponds are all a part of the biosphere.Your AnswerTrueUnit 1 Assignment: Matter, Energy, Populations, and SuccessionQuestion Number 1Points: 0.00/5.00Question TextWhat type of succession takes place when there is an existing biotic community in the soilto begin with?Your AnswerB. Primary successionQuestion Number 2Points: 5.00/5.00Question TextOrganisms that get their energy by eating other organisms are called _______.Your AnswerB. consumers.Question Number 2Points: 3.75/5.00Question TextWhat does a symbiotic relationship between an algae and fungi describe?Your AnswerA. A lichenQuestion Number 3Points: 5.00/5.00Question TextA few specialized forms of bacteria that are able to obtain nitrogen directly from theatmosphere are known as _______.Your AnswerC. nitrogen-fixing bacteria.Question Number 3Points: 3.75/5.00Question TextWhen does secondary succession occur?Your Answer
B. After a forest fire burns down all of the treesQuestion Number 4Points: 3.75/5.00Question TextCarbon enters an ecosystem when ________.Your AnswerB. plants take in carbon dioxide for photosynthesis.Question Number 5Points: 5.00/5.00Question TextBesides food, birth rate, and natural catastrophes what other limiting factors affect the sizeof a population?Your AnswerD. all of the aboveQuestion Number 7Points: 5.00/5.00Question TextWhat type of succession takes place when there is no existing biotic community or soil tobegin with?Your AnswerA. Primary successionQuestion Number 8Points: 5.00/5.00Question TextDuring photosynthesis, water molecules are split and __________ is released into theatmosphere and used by living organisms for respiration.Your AnswerA. oxygenQuestion Number 9Points: 5.00/5.00Question TextThe water cycle is driven by _______.Your AnswerA. heat from the sun.Question Number 11Points: 5.00/5.00Question TextPhotosynthesis releases oxygen, which is used by living organisms for respiration. Duringrespiration, water is released, which is absorbed by plants. This process if called theYour AnswerA. Oxygen cycleQuestion Number 12Points: 5.00/5.00Question TextNitrogen gas makes up _____ of the air in the atmosphere.Your AnswerD. 78%Question Number 13Points: 5.00/5.00Question TextEnergy flows through ecosystems as one organism eats another organism. Each step in this
series of organisms eating other organisms is called a(n) _______.Your AnswerC. trophic level.Question Number 14Points: 5.00/5.00Question TextWhich statement about populations is true?Your AnswerC. Populations can increase or decrease with seasons.

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Term
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Integers, Atom, Atomic Number, question number

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