PH is important so that O nutrients can be properly absorbed into the plant.
flowers will grow
roots will grow deeper into the ground.
O fruit can develop on the plant.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

the answer is c most of the fortnite players usually buy v bucks to get the battle pass and other cosmetics but some players who are referred to as "no skins" don't   buy skins and are usually noobs.

a covalent bond, specfically triple bond