You notice that two small birch trees sprout and begin to grow among the sunflowers that sprouted naturally in your garden. the birch trees are slower growers than the sunflowers that had sprouted, but by the fifth summer they start to shade the sunflowers. the birch trees and the sunflowers are in competition for:

K-selected.

Explanation:

K-selected -

These are the species , whose population alters from the nearby environment , in which they are residing , is known as K - selected or K - strategist .

These type of species , tends to develop lesser offsprings and are comparatively stable .

These species have very long gestation period and gets matured in a very slow pace.

Hence,

From the question , the correct term for the given information of the question is K - selected .

we both have laws and checks and balances.