Answer:
The Lungs. The lungs play a mandatory role in the excretory system. Your lungs remove the carbon dioxide built up in your blood using specialized cells known as alveoli. Your lungs process the molecules into gas and when you breathe, the gas is ejected from your body.
Explanation:
GRIMNER
Grow
Reproduce
Irritability (ie, being able to sense changes in the environment, detect danger, etc.)
Movement
Nutrition (eating and drinking)
Excretion (get rid of waste materials)
Respire (breathe)
Answer:
The heliocentric theory suggest that the sun is the central body of the solar system and perhaps of the universe. Everything else (planets and their satellites, asteroids, comets, etc.) revolves around it. The first evidence of the theory is found in the writings of ancient Greek philosopher-scientists.
Explanation:
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The correct answer is "C". 'Proton'. The number of protons is equal to the atomic numbers.
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