Answer:
The higher the recruitment, the stronger the muscle contraction will be. The greater the cross-sectional area of the muscle, the more muscle fibers that can be activated simultaneously.
Muscle strength is directly dependent upon the size of the cross-sectional area of muscle.
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Explanation:
Answer:
protozoa
Explanation:
because a mollusks,insects and worms are in the insecta kingdom
The ozone hole over the Antarctic has begun to heal, according to a new study, more than 30 years after its discovery. ... The stratospheric ozone layer protects Earth from the sun's harmful ultraviolet (UV-B) rays, which can cause skin cancer and cataracts in humans, and physiological damage in animals and plants.
An organelle is the word that scientists use to describe a part of a cell that is enclosed by a membrane. A lysosome, nucleus and a mitochondria are all examples of organelles.
1.sun
2.the earth's interior
