Secondary succession occurs following triggers such as logging, mining, wildfires, or drought. The presence of soil nutrients allows for a faster recovery.

Hardwood trees

Pine trees

Perennials

and

grasses

Shrubs

7777

Step-by-step explanation:

34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm