population ecology

When individuals join a population

• Aliens
• migration
• Immigration
• Emigration

A population is 

• a group of communities that exist in different places
• a group of organisms of one species that lives in the same area at the same time
• a group of people that populate one place at the same time on different planets

When you leave a population

• emigration
• mitigation

Carrying Capacity is

• the capacity of what one person can carry per day 
• how many animals you have in your daily bag limit at the end of the year
• wildebeest at a watering hole with zebras
• the maximum number of individuals that the environment can support

What are two ways in which the environment can influence population size?

• competition and natural disasters
• biomes and ecosystems

Why is biodiversity important to ecosystems?

• It allows ecosystems to adapt to changing climates.

• It establishes the separate ecosystems within a biome.

• It has created antibiotic-resistant bacteria

• It provides each organism with one specific role to ensure there is no competition.

Which of the following could be a density-independent limiting factor in the desert?

• number of prey

• food supply

• parasitism

• rainfall

Abiotic factors are nonliving things in an ecosystem. Select the list that only contains abiotic factors.

• variety of food sources, annual precipitation, and number of decomposers

• the density of predators, water depth, types of parasites

• precipitation amount, number of prey species, plant types

• water temperature, amount of sunlight, soil type

Which point in this graph represents exponential growth?

• Point E

• Point A

• Point B

• Point C

The graph represents _____ of a population.

• logistic growth model

• exponential growth model