Living Things and Populations

The living parts of an ecosystem are called

• abiotic factors

• biotic factors

Select the abiotic factors from the list below.

• grass

• oxygen

• water

• trees

Tags

NGSS.MS-LS2-3

Which of the following lists the levels of ecosystem organization in the proper order from largest to smallest?

• ecosystem, population, community, species

• species, population, community, ecosystem

• ecosystem, community, population, species

All the different populations that live together in a specific area make up a(n)

• species

• community

• habitat

• ecosystem

A group of organisms living in the same area are only members of the same population if they are also members of the same

Identify the two ways by which a population can increase.

• births

• deaths

• immigration

• emigration

Which of the following factors can limit a population's size?

• food

• water

• weather conditions

• space

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Population limiting factors cause a population size to

• increase

• decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

If you count 600 rabbits living in a nature preserve that is 50 square kilometers in area, the population density of the rabbits is

• 3 rabbits per square kilometer

• 12 rabbits per square kilometer

• 30 000 rabbits per square kilometer

The largest population size that an area can support is the

• habitat

• birth rate

• carrying capacity

• ecosystem

Tags

NGSS.MS-LS2-4