The is should be C, Im not 100% sure though...
Soil structure is important becuse it does affect the characteristic of soil.
this is how particles are arrange in different type of soil
Sand soil:particles are very loose,it does not rentent water or nutrients,lack humus
clay soil:very packed particles,becomes water logg,rich in nutrient and humus.but is not aerated
Loamy soil is not packed in particles but is kind of in between
A locating overlapping sequences
Endocrine system consist of endocrine glands that produces hormones. This hormones are carried by blood to their sites of function
