The benefits of thinning a forest over other methods of forestry management include which of the following?
I. Wildlife habitats are maintained.
II. Competition among tree species increases.
III. The understory growth and remaining trees are healthier.

III. The understory growth and remaining trees are healthier.

Explanation:

Forestry can be defined as the art and science of creating, development, management, conservation and analysis of the living organisms such as plants, trees and woodlands existing in the forest. This is usually done so as to tap into the environmental benefits associated with the forests and to ensure the continuous existence of wildlife, plant growth and development.

Forest Management is a branch of forestry. The field of forest management typically deals with legal, administrative, financial, economical, technical and social aspects of a forest so as to facilitate the smooth running and operation of the forest reserve.

Thinning is a forest management process which typically involves removing full rows of trees so as to increase the space between them and to reduce competition among trees for resources such as moisture, nutrients and sunlight.

Hence, the benefits of thinning a forest over other methods of forestry management include the understory growth and remaining trees are healthier.

ek = (m·v2) / 2

v - velocity of system after the collision

m = m1 + m2

ek = (m1 + m2) ·v2/2

ek = (200 + 250) ·2,32/2 = 450·5,29/2 = 1190,25 j