Factors Affecting Population Size

All the organisms of the same species that live in the same area are called a ______.

• Group
• Population
• Herd
• Cluster

Ecologists measure the health of a population by its size and how quickly it is growing. True or False?

• True
• False

Tags

NGSS.MS-LS1-5

A factor or factors that can affect species distribution is/are ____.

• Predation
• Disease
• Competition
• All of the above

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

The population size is the number of individuals in a population.

• True
• False

Populations of different species in a particular area make up a community. True or False?

• True
• False

The average number of individuals per unit of area or volume is called ______.

• Population size
• Population systematics
• Population density
• Population distribution

If birth rate plus immigration exceeds death rate plus emigration, a population _______.

• grows
• declines
• stays the same
• none of the above

The ______ rate of a population is the change in the population size per member of the population per unit of time.

• death
• growth
• birth
• logistic

Tags

NGSS.MS-LS1-5

Emigration is the movement of individuals ______ a population.

• into
• out of

A friend of yours believes that predators are extremely detrimental (bad) for ecosystems and that the ecosystem would be better off without them. You should

• disagree
• agree
• tell on them
• unfriend them indefinitely

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5