← Populations and Communities Notes Export Options Alphabetize Word-Def Delimiter Tab Comma Custom Def-Word Delimiter New Line Semicolon Custom Data Copy and paste the text below. It is read-only. Select All competition This limits population size plenty of water Which of these factors helps a population grow? population densities You decide to raise mealworms in two identical containers at home. You count the number of mealworms in each container to compare what? trap-mark-release Which of these is a method used to count a wildlife population? sample counts Which of these is a method used to count the size of a population in a large area? a reduction in living space Which of these limits the size of a population? carrying capacity The largest number of organisms in a species that can live in an ecosystem at one time is called a limiting factor A drought condition affects an area. Lack of rain is called what for that area's organisms countries with higher birthrates than death rates have growing populations Which of these is true for human populations? the wolf population has excellent biotic potential. A population of wolves lives in a region with plenty of food, water, and living space. Which of these is true? about 6 billion In the year 2000, what was Earth's human population? fern Which of these organisms is a producer? omnivore A pig is which kind of consumer? parasitism Your sick puppy is diagnosed with roundworms. What type of symbiotic relationship do the puppy and the roundworms have? commensalism Clown fish swim among a sea anemone's tentacles without being stung. What type of symbiotic relationship do the clown fish and the sea anemone have? predators Consumers that capture and eat other consumers are called 900 A scientist wants to count the golden eagle population in a forest of 2000 m2. Nine golden eagles are found in a 20 m2 area. What is the estimated size of the population? polar bears Which of these animals has a habitat in the cold northern regions? biosphere Earth's surrounding atmosphere is part of its desert regions Cactus plants are usually found in which environment? an ecosystem The organisms living in an area and the nonliving features of that environment form what? Mercury Which planet is closest to the Sun? community All populations living together in an ecosystem are called a what? population All the tortoises living in a specific region of a desert ecosystem make up what? a forest floor A salamander's habitat is which of these?