15-4...Changes in Communities

Pioneer species break down rocks, forming the beginning of __________________

• primary
• soil
• secondary
• pioneer

Two examples of pioneer species are __________________ and lichens

• mushrooms
• meatballs
• mosses
• mud

Tags

NGSS.MS-LS2-4

A lichen is a symbiotic combination of ______________ and algae.

• fungi
• fun 
• fruit
• forest

A forest fire is followed by __________________________ succession.

• primary
• secondary
• pioneer species

Tags

NGSS.MS-LS2-4

The series of changes that occur in an area where no soil or organisms exist is called _________________ succession.

• primary
• secondary
• pioneer species

After a long time, a mature community is established and this community does not change unless it is _________________.

• disturbed
• moved
• ruined

The first species to populate an area are called _____________ species.

• primary 
• secondary
• pioneer 

Unlike primary succession, secondary succession occurs in a place where an ____________ currently exists.

• community
• population
• ecosystem
• species

Secondary succession is usually ___________  than primary succession.

• slower
• faster
• more

Natural disturbances that lead to succession includes fires, hurricanes and tornadoes.

• true
• false