<span>Muscles are able to produce force only while they are contracting. For example, the human bicep produces force only when it is contracted to pull the forearm upwards. In order to straighten the arm once again, a pushing force is needed which is provided by the tricep. Therefore, because muscles need to be able to both push and pull, they work in pairs.</span>
Answer:
yes they do
Explanation:
they do because they don't want to be big chungus anymore, they want to be a skinny queen
It is A After watching
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"The centre of the earth is harder to study than the centre of the sun." Temperatures in the lower mantle the reach around 3,000-3,500 degrees Celsius and the barometer reads about 125 gigapascals, about one and a quarter million times atmospheric pressure."
Cellular resperation because photosynthesis is used for plants while cellur respiration is used for both plants and animals