Answer:
the answer is B i did this test
Explanation:
Answer:
b. the number of motor units recruited
Explanation:
Recruitment of motor units is defined as the activation of several additional motor units which results into high contractile force in a muscle. A motor unit consists of the stimulating muscle fibres and one motor neuron.
Activation of motor neuron, stimulates and contracts all the muscle fibres inherited by the motor neuron. When only one motor neuron is activated, it results into a weak but distributed contraction of the muscle. Activating more motor neurons will result in activation of more muscle fibres, and thus a stronger muscle contraction.
Hence, the correct option is b.
Because the earth's is roughly spherical the sun's light is distributed over a wider area towards the poles, so it has less heating effect... the air cools and falls over the poles and returns to the equator close to the ground. This assumes that there is no other effect (e.g. wind, low or high pressure regions etc.)
Answer:D.
Explanation:ocean gyre is a large system of circular ocean currents formed by global wind patterns and forces created by Earth's rotation.