D is the answer because I had to answer the same question
C because the muscular system is the only system in the body that moves
Answer:
Structure of the atmosphere
The atmosphere can be divided into five layers according to the diversity of temperature and density. They are:
Troposphere
Stratosphere
Mesosphere
Thermosphere (Ionosphere)
Exosphere
Explanation:
Composition of the atmosphere
The atmosphere is made up of different gases, water vapour and dust particles.
The composition of the atmosphere is not static and it changes according to the time and place.
Answer:
a
Explanation:
all cells do not contain a nucleus
