Answer:
stethoscope is the instrument used to measure heart beat
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
Answer:
their are the characteristics of the similar term of physical feature
Answer: This is called chlorine
Explanation: 18