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Students counted 75 sand crabs in a 5-meter by 3-meter section of a beach. What was the population density of sand crabs in that section?
competition
abiotic
limiting factors
75/15= 5 so the population density is 5 crabs per square meter
population
adaptations
60*30=1800*25=27,000 so 27,000 crabs.
species
Water, sunlight, and oxygen are examples of ____ factors in ecosystems.
competition
abiotic
limiting factors
75/15= 5 so the population density is 5 crabs per square meter
population
adaptations
60*30=1800*25=27,000 so 27,000 crabs.
species
All the members of one species in a particular area.
competition
abiotic
limiting factors
75/15= 5 so the population density is 5 crabs per square meter
population
adaptations
60*30=1800*25=27,000 so 27,000 crabs.
species
The struggle between organisms to survive as they attempt to use the same limited resource.
competition
abiotic
limiting factors
75/15= 5 so the population density is 5 crabs per square meter
population
adaptations
60*30=1800*25=27,000 so 27,000 crabs.
species
Every organism has a variety of ____ that enable it to live successfully in its environment.
competition
abiotic
limiting factors
75/15= 5 so the population density is 5 crabs per square meter
population
adaptations
60*30=1800*25=27,000 so 27,000 crabs.
species
A group of organisms that are physically similar and can reproduce with each other to produce fertile offspring.
competition
abiotic
limiting factors
75/15= 5 so the population density is 5 crabs per square meter
population
adaptations
60*30=1800*25=27,000 so 27,000 crabs.
species
Environmental conditions that prevent populations from increasing.
competition
abiotic
limiting factors
75/15= 5 so the population density is 5 crabs per square meter
population
adaptations
60*30=1800*25=27,000 so 27,000 crabs.
species
The entire beach measures 60 meters by 30 meters. Estimate the total population of sand crabs on the entire beach.
competition
abiotic
limiting factors
75/15= 5 so the population density is 5 crabs per square meter
population
adaptations
60*30=1800*25=27,000 so 27,000 crabs.
species
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